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Finding the Fourth Proportional to 360.15, 540.27 and 129.04

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Solution

The fourth proportional to 360.15, 540.27 and 129.04 is: 193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.15 : 540.27 = 129.04 : x
  2. Step 2: Convert to fraction form
    360.15/540.27 = 129.04/x
  3. Step 3: Cross multiply
    360.15x = 540.27 × 129.04
  4. Step 4: Simplify right side
    360.15x = 69,718.13
  5. Step 5: Solve for x
    x = 69,718.13/360.15
  6. Step 6: Final answer
    x = 193.58

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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.