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Finding the Fourth Proportional to 264.92, 398.76 and 239.76

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Solution

The fourth proportional to 264.92, 398.76 and 239.76 is: 360.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.92 : 398.76 = 239.76 : x
  2. Step 2: Convert to fraction form
    264.92/398.76 = 239.76/x
  3. Step 3: Cross multiply
    264.92x = 398.76 × 239.76
  4. Step 4: Simplify right side
    264.92x = 95,605.80
  5. Step 5: Solve for x
    x = 95,605.80/264.92
  6. Step 6: Final answer
    x = 360.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.