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Finding the Fourth Proportional to 1,077.92, 1,617.42 and 500.72

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Solution

The fourth proportional to 1,077.92, 1,617.42 and 500.72 is: 751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.92 : 1,617.42 = 500.72 : x
  2. Step 2: Convert to fraction form
    1,077.92/1,617.42 = 500.72/x
  3. Step 3: Cross multiply
    1,077.92x = 1,617.42 × 500.72
  4. Step 4: Simplify right side
    1,077.92x = 809,874.54
  5. Step 5: Solve for x
    x = 809,874.54/1,077.92
  6. Step 6: Final answer
    x = 751.33

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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.