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Finding the Fourth Proportional to 482.38, 721.68 and 306.08

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Solution

The fourth proportional to 482.38, 721.68 and 306.08 is: 457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.38 : 721.68 = 306.08 : x
  2. Step 2: Convert to fraction form
    482.38/721.68 = 306.08/x
  3. Step 3: Cross multiply
    482.38x = 721.68 × 306.08
  4. Step 4: Simplify right side
    482.38x = 220,891.81
  5. Step 5: Solve for x
    x = 220,891.81/482.38
  6. Step 6: Final answer
    x = 457.92

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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.