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Finding the Fourth Proportional to 240.14, 331.52 and 156.18

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Solution

The fourth proportional to 240.14, 331.52 and 156.18 is: 215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.14 : 331.52 = 156.18 : x
  2. Step 2: Convert to fraction form
    240.14/331.52 = 156.18/x
  3. Step 3: Cross multiply
    240.14x = 331.52 × 156.18
  4. Step 4: Simplify right side
    240.14x = 51,776.79
  5. Step 5: Solve for x
    x = 51,776.79/240.14
  6. Step 6: Final answer
    x = 215.61

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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.