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Finding the Fourth Proportional to 482.71, 724.07 and 238.99

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Solution

The fourth proportional to 482.71, 724.07 and 238.99 is: 358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.71 : 724.07 = 238.99 : x
  2. Step 2: Convert to fraction form
    482.71/724.07 = 238.99/x
  3. Step 3: Cross multiply
    482.71x = 724.07 × 238.99
  4. Step 4: Simplify right side
    482.71x = 173,045.49
  5. Step 5: Solve for x
    x = 173,045.49/482.71
  6. Step 6: Final answer
    x = 358.49

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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.