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Finding the Fourth Proportional to 717.58, 988.22 and 617.23

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Solution

The fourth proportional to 717.58, 988.22 and 617.23 is: 850.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.58 : 988.22 = 617.23 : x
  2. Step 2: Convert to fraction form
    717.58/988.22 = 617.23/x
  3. Step 3: Cross multiply
    717.58x = 988.22 × 617.23
  4. Step 4: Simplify right side
    717.58x = 609,951.00
  5. Step 5: Solve for x
    x = 609,951.00/717.58
  6. Step 6: Final answer
    x = 850.02

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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.