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Finding the Fourth Proportional to 360.42, 540.75 and 239.16

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Solution

The fourth proportional to 360.42, 540.75 and 239.16 is: 358.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.42 : 540.75 = 239.16 : x
  2. Step 2: Convert to fraction form
    360.42/540.75 = 239.16/x
  3. Step 3: Cross multiply
    360.42x = 540.75 × 239.16
  4. Step 4: Simplify right side
    360.42x = 129,325.77
  5. Step 5: Solve for x
    x = 129,325.77/360.42
  6. Step 6: Final answer
    x = 358.82

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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.