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Finding the Fourth Proportional to 251.01, 346.55 and 239.40

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Solution

The fourth proportional to 251.01, 346.55 and 239.40 is: 330.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.01 : 346.55 = 239.40 : x
  2. Step 2: Convert to fraction form
    251.01/346.55 = 239.40/x
  3. Step 3: Cross multiply
    251.01x = 346.55 × 239.40
  4. Step 4: Simplify right side
    251.01x = 82,962.87
  5. Step 5: Solve for x
    x = 82,962.87/251.01
  6. Step 6: Final answer
    x = 330.52

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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.