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Finding the Fourth Proportional to 240.32, 360.56 and 142.91

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Solution

The fourth proportional to 240.32, 360.56 and 142.91 is: 214.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.32 : 360.56 = 142.91 : x
  2. Step 2: Convert to fraction form
    240.32/360.56 = 142.91/x
  3. Step 3: Cross multiply
    240.32x = 360.56 × 142.91
  4. Step 4: Simplify right side
    240.32x = 51,527.82
  5. Step 5: Solve for x
    x = 51,527.82/240.32
  6. Step 6: Final answer
    x = 214.41

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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.