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Finding the Fourth Proportional to 708.37, 1,062.55 and 617.13

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Solution

The fourth proportional to 708.37, 1,062.55 and 617.13 is: 925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.37 : 1,062.55 = 617.13 : x
  2. Step 2: Convert to fraction form
    708.37/1,062.55 = 617.13/x
  3. Step 3: Cross multiply
    708.37x = 1,062.55 × 617.13
  4. Step 4: Simplify right side
    708.37x = 655,731.48
  5. Step 5: Solve for x
    x = 655,731.48/708.37
  6. Step 6: Final answer
    x = 925.69

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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.