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Finding the Fourth Proportional to 663.59, 995.82 and 658.46

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Solution

The fourth proportional to 663.59, 995.82 and 658.46 is: 988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.59 : 995.82 = 658.46 : x
  2. Step 2: Convert to fraction form
    663.59/995.82 = 658.46/x
  3. Step 3: Cross multiply
    663.59x = 995.82 × 658.46
  4. Step 4: Simplify right side
    663.59x = 655,702.66
  5. Step 5: Solve for x
    x = 655,702.66/663.59
  6. Step 6: Final answer
    x = 988.12

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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.