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Finding the Fourth Proportional to 976.32, 1,463.40 and 326.57

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Solution

The fourth proportional to 976.32, 1,463.40 and 326.57 is: 489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.32 : 1,463.40 = 326.57 : x
  2. Step 2: Convert to fraction form
    976.32/1,463.40 = 326.57/x
  3. Step 3: Cross multiply
    976.32x = 1,463.40 × 326.57
  4. Step 4: Simplify right side
    976.32x = 477,895.22
  5. Step 5: Solve for x
    x = 477,895.22/976.32
  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.