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Finding the Fourth Proportional to 735.53, 1,107.70 and 669.92

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Solution

The fourth proportional to 735.53, 1,107.70 and 669.92 is: 1,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.53 : 1,107.70 = 669.92 : x
  2. Step 2: Convert to fraction form
    735.53/1,107.70 = 669.92/x
  3. Step 3: Cross multiply
    735.53x = 1,107.70 × 669.92
  4. Step 4: Simplify right side
    735.53x = 742,070.38
  5. Step 5: Solve for x
    x = 742,070.38/735.53
  6. Step 6: Final answer
    x = 1,008.89

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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.