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Finding the Fourth Proportional to 1,132.89, 1,698.87 and 517.02

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Solution

The fourth proportional to 1,132.89, 1,698.87 and 517.02 is: 775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.89 : 1,698.87 = 517.02 : x
  2. Step 2: Convert to fraction form
    1,132.89/1,698.87 = 517.02/x
  3. Step 3: Cross multiply
    1,132.89x = 1,698.87 × 517.02
  4. Step 4: Simplify right side
    1,132.89x = 878,349.77
  5. Step 5: Solve for x
    x = 878,349.77/1,132.89
  6. Step 6: Final answer
    x = 775.32

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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.