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Finding the Fourth Proportional to 621.62, 932.59 and 275.03

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Solution

The fourth proportional to 621.62, 932.59 and 275.03 is: 412.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.62 : 932.59 = 275.03 : x
  2. Step 2: Convert to fraction form
    621.62/932.59 = 275.03/x
  3. Step 3: Cross multiply
    621.62x = 932.59 × 275.03
  4. Step 4: Simplify right side
    621.62x = 256,489.41
  5. Step 5: Solve for x
    x = 256,489.41/621.62
  6. Step 6: Final answer
    x = 412.62

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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.