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Finding the Fourth Proportional to 251.71, 375.74 and 240.47

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Solution

The fourth proportional to 251.71, 375.74 and 240.47 is: 358.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.71 : 375.74 = 240.47 : x
  2. Step 2: Convert to fraction form
    251.71/375.74 = 240.47/x
  3. Step 3: Cross multiply
    251.71x = 375.74 × 240.47
  4. Step 4: Simplify right side
    251.71x = 90,353.00
  5. Step 5: Solve for x
    x = 90,353.00/251.71
  6. Step 6: Final answer
    x = 358.96

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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.