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Finding the Fourth Proportional to 962.04, 1,442.66 and 669.42

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Solution

The fourth proportional to 962.04, 1,442.66 and 669.42 is: 1,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.04 : 1,442.66 = 669.42 : x
  2. Step 2: Convert to fraction form
    962.04/1,442.66 = 669.42/x
  3. Step 3: Cross multiply
    962.04x = 1,442.66 × 669.42
  4. Step 4: Simplify right side
    962.04x = 965,745.46
  5. Step 5: Solve for x
    x = 965,745.46/962.04
  6. Step 6: Final answer
    x = 1,003.85

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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.