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Finding the Fourth Proportional to 879.48, 1,318.14 and 532.26

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Solution

The fourth proportional to 879.48, 1,318.14 and 532.26 is: 797.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.48 : 1,318.14 = 532.26 : x
  2. Step 2: Convert to fraction form
    879.48/1,318.14 = 532.26/x
  3. Step 3: Cross multiply
    879.48x = 1,318.14 × 532.26
  4. Step 4: Simplify right side
    879.48x = 701,593.20
  5. Step 5: Solve for x
    x = 701,593.20/879.48
  6. Step 6: Final answer
    x = 797.74

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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.