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Finding the Fourth Proportional to 621.49, 932.30 and 251.43

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Solution

The fourth proportional to 621.49, 932.30 and 251.43 is: 377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.49 : 932.30 = 251.43 : x
  2. Step 2: Convert to fraction form
    621.49/932.30 = 251.43/x
  3. Step 3: Cross multiply
    621.49x = 932.30 × 251.43
  4. Step 4: Simplify right side
    621.49x = 234,403.53
  5. Step 5: Solve for x
    x = 234,403.53/621.49
  6. Step 6: Final answer
    x = 377.16

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.