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Finding the Fourth Proportional to 240.66, 358.02 and 239.85

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Solution

The fourth proportional to 240.66, 358.02 and 239.85 is: 356.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.66 : 358.02 = 239.85 : x
  2. Step 2: Convert to fraction form
    240.66/358.02 = 239.85/x
  3. Step 3: Cross multiply
    240.66x = 358.02 × 239.85
  4. Step 4: Simplify right side
    240.66x = 85,871.10
  5. Step 5: Solve for x
    x = 85,871.10/240.66
  6. Step 6: Final answer
    x = 356.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.