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Finding the Fourth Proportional to 373.38, 515.31 and 249.00

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Solution

The fourth proportional to 373.38, 515.31 and 249.00 is: 343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.38 : 515.31 = 249.00 : x
  2. Step 2: Convert to fraction form
    373.38/515.31 = 249.00/x
  3. Step 3: Cross multiply
    373.38x = 515.31 × 249.00
  4. Step 4: Simplify right side
    373.38x = 128,312.17
  5. Step 5: Solve for x
    x = 128,312.17/373.38
  6. Step 6: Final answer
    x = 343.65

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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.