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Finding the Fourth Proportional to 445.62, 614.98 and 249.13

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Solution

The fourth proportional to 445.62, 614.98 and 249.13 is: 343.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.62 : 614.98 = 249.13 : x
  2. Step 2: Convert to fraction form
    445.62/614.98 = 249.13/x
  3. Step 3: Cross multiply
    445.62x = 614.98 × 249.13
  4. Step 4: Simplify right side
    445.62x = 153,206.19
  5. Step 5: Solve for x
    x = 153,206.19/445.62
  6. Step 6: Final answer
    x = 343.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.