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Finding the Fourth Proportional to 746.96, 1,120.80 and 500.32

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Solution

The fourth proportional to 746.96, 1,120.80 and 500.32 is: 750.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.96 : 1,120.80 = 500.32 : x
  2. Step 2: Convert to fraction form
    746.96/1,120.80 = 500.32/x
  3. Step 3: Cross multiply
    746.96x = 1,120.80 × 500.32
  4. Step 4: Simplify right side
    746.96x = 560,758.66
  5. Step 5: Solve for x
    x = 560,758.66/746.96
  6. Step 6: Final answer
    x = 750.72

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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.