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Finding the Fourth Proportional to 373.31, 515.12 and 207.48

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Solution

The fourth proportional to 373.31, 515.12 and 207.48 is: 286.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.31 : 515.12 = 207.48 : x
  2. Step 2: Convert to fraction form
    373.31/515.12 = 207.48/x
  3. Step 3: Cross multiply
    373.31x = 515.12 × 207.48
  4. Step 4: Simplify right side
    373.31x = 106,873.48
  5. Step 5: Solve for x
    x = 106,873.48/373.31
  6. Step 6: Final answer
    x = 286.29

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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.