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Finding the Fourth Proportional to 667.31, 1,001.19 and 602.61

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Solution

The fourth proportional to 667.31, 1,001.19 and 602.61 is: 904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.31 : 1,001.19 = 602.61 : x
  2. Step 2: Convert to fraction form
    667.31/1,001.19 = 602.61/x
  3. Step 3: Cross multiply
    667.31x = 1,001.19 × 602.61
  4. Step 4: Simplify right side
    667.31x = 603,327.11
  5. Step 5: Solve for x
    x = 603,327.11/667.31
  6. Step 6: Final answer
    x = 904.12

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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.