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Finding the Fourth Proportional to 746.75, 1,029.05 and 560.45

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Solution

The fourth proportional to 746.75, 1,029.05 and 560.45 is: 772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.75 : 1,029.05 = 560.45 : x
  2. Step 2: Convert to fraction form
    746.75/1,029.05 = 560.45/x
  3. Step 3: Cross multiply
    746.75x = 1,029.05 × 560.45
  4. Step 4: Simplify right side
    746.75x = 576,727.33
  5. Step 5: Solve for x
    x = 576,727.33/746.75
  6. Step 6: Final answer
    x = 772.32

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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.