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Finding the Fourth Proportional to 240.71, 332.33 and 215.80

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Solution

The fourth proportional to 240.71, 332.33 and 215.80 is: 297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.71 : 332.33 = 215.80 : x
  2. Step 2: Convert to fraction form
    240.71/332.33 = 215.80/x
  3. Step 3: Cross multiply
    240.71x = 332.33 × 215.80
  4. Step 4: Simplify right side
    240.71x = 71,714.90
  5. Step 5: Solve for x
    x = 71,714.90/240.71
  6. Step 6: Final answer
    x = 297.94

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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.