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Finding the Fourth Proportional to 1,152.26, 1,728.39 and 372.33

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Solution

The fourth proportional to 1,152.26, 1,728.39 and 372.33 is: 558.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.26 : 1,728.39 = 372.33 : x
  2. Step 2: Convert to fraction form
    1,152.26/1,728.39 = 372.33/x
  3. Step 3: Cross multiply
    1,152.26x = 1,728.39 × 372.33
  4. Step 4: Simplify right side
    1,152.26x = 643,531.45
  5. Step 5: Solve for x
    x = 643,531.45/1,152.26
  6. Step 6: Final answer
    x = 558.50

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Double scale
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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.