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Finding the Fourth Proportional to 373.71, 515.78 and 269.15

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Solution

The fourth proportional to 373.71, 515.78 and 269.15 is: 371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.71 : 515.78 = 269.15 : x
  2. Step 2: Convert to fraction form
    373.71/515.78 = 269.15/x
  3. Step 3: Cross multiply
    373.71x = 515.78 × 269.15
  4. Step 4: Simplify right side
    373.71x = 138,819.61
  5. Step 5: Solve for x
    x = 138,819.61/373.71
  6. Step 6: Final answer
    x = 371.46

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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.