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Finding the Fourth Proportional to 748.32, 1,032.24 and 573.60

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Solution

The fourth proportional to 748.32, 1,032.24 and 573.60 is: 791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.32 : 1,032.24 = 573.60 : x
  2. Step 2: Convert to fraction form
    748.32/1,032.24 = 573.60/x
  3. Step 3: Cross multiply
    748.32x = 1,032.24 × 573.60
  4. Step 4: Simplify right side
    748.32x = 592,092.86
  5. Step 5: Solve for x
    x = 592,092.86/748.32
  6. Step 6: Final answer
    x = 791.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.