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Finding the Fourth Proportional to 360.31, 540.35 and 116.79

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Solution

The fourth proportional to 360.31, 540.35 and 116.79 is: 175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.31 : 540.35 = 116.79 : x
  2. Step 2: Convert to fraction form
    360.31/540.35 = 116.79/x
  3. Step 3: Cross multiply
    360.31x = 540.35 × 116.79
  4. Step 4: Simplify right side
    360.31x = 63,107.48
  5. Step 5: Solve for x
    x = 63,107.48/360.31
  6. Step 6: Final answer
    x = 175.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.