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Finding the Fourth Proportional to 621.60, 932.40 and 159.38

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Solution

The fourth proportional to 621.60, 932.40 and 159.38 is: 239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.60 : 932.40 = 159.38 : x
  2. Step 2: Convert to fraction form
    621.60/932.40 = 159.38/x
  3. Step 3: Cross multiply
    621.60x = 932.40 × 159.38
  4. Step 4: Simplify right side
    621.60x = 148,605.50
  5. Step 5: Solve for x
    x = 148,605.50/621.60
  6. Step 6: Final answer
    x = 239.07

Related Problems

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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.