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Finding the Fourth Proportional to 649.45, 974.17 and 238.62

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Solution

The fourth proportional to 649.45, 974.17 and 238.62 is: 357.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.45 : 974.17 = 238.62 : x
  2. Step 2: Convert to fraction form
    649.45/974.17 = 238.62/x
  3. Step 3: Cross multiply
    649.45x = 974.17 × 238.62
  4. Step 4: Simplify right side
    649.45x = 232,454.61
  5. Step 5: Solve for x
    x = 232,454.61/649.45
  6. Step 6: Final answer
    x = 357.93

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Similar ratio
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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.