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Finding the Fourth Proportional to 1,654.65, 2,481.95 and 667.45

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Solution

The fourth proportional to 1,654.65, 2,481.95 and 667.45 is: 1,001.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.65 : 2,481.95 = 667.45 : x
  2. Step 2: Convert to fraction form
    1,654.65/2,481.95 = 667.45/x
  3. Step 3: Cross multiply
    1,654.65x = 2,481.95 × 667.45
  4. Step 4: Simplify right side
    1,654.65x = 1,656,566.80
  5. Step 5: Solve for x
    x = 1,656,566.80/1,654.65
  6. Step 6: Final answer
    x = 1,001.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.