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Finding the Fourth Proportional to 717.03, 988.73 and 450.95

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Solution

The fourth proportional to 717.03, 988.73 and 450.95 is: 621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.03 : 988.73 = 450.95 : x
  2. Step 2: Convert to fraction form
    717.03/988.73 = 450.95/x
  3. Step 3: Cross multiply
    717.03x = 988.73 × 450.95
  4. Step 4: Simplify right side
    717.03x = 445,862.85
  5. Step 5: Solve for x
    x = 445,862.85/717.03
  6. Step 6: Final answer
    x = 621.82

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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.