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Finding the Fourth Proportional to 1,147.97, 1,721.96 and 326.33

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Solution

The fourth proportional to 1,147.97, 1,721.96 and 326.33 is: 489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.97 : 1,721.96 = 326.33 : x
  2. Step 2: Convert to fraction form
    1,147.97/1,721.96 = 326.33/x
  3. Step 3: Cross multiply
    1,147.97x = 1,721.96 × 326.33
  4. Step 4: Simplify right side
    1,147.97x = 561,924.65
  5. Step 5: Solve for x
    x = 561,924.65/1,147.97
  6. Step 6: Final answer
    x = 489.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.