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Finding the Fourth Proportional to 373.47, 515.49 and 249.15

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Solution

The fourth proportional to 373.47, 515.49 and 249.15 is: 343.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.47 : 515.49 = 249.15 : x
  2. Step 2: Convert to fraction form
    373.47/515.49 = 249.15/x
  3. Step 3: Cross multiply
    373.47x = 515.49 × 249.15
  4. Step 4: Simplify right side
    373.47x = 128,434.33
  5. Step 5: Solve for x
    x = 128,434.33/373.47
  6. Step 6: Final answer
    x = 343.89

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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.