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Finding the Fourth Proportional to 759.20, 1,139.76 and 597.44

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Solution

The fourth proportional to 759.20, 1,139.76 and 597.44 is: 896.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    759.20 : 1,139.76 = 597.44 : x
  2. Step 2: Convert to fraction form
    759.20/1,139.76 = 597.44/x
  3. Step 3: Cross multiply
    759.20x = 1,139.76 × 597.44
  4. Step 4: Simplify right side
    759.20x = 680,938.21
  5. Step 5: Solve for x
    x = 680,938.21/759.20
  6. Step 6: Final answer
    x = 896.92

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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.