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Finding the Fourth Proportional to 805.19, 1,201.26 and 717.53

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Solution

The fourth proportional to 805.19, 1,201.26 and 717.53 is: 1,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.19 : 1,201.26 = 717.53 : x
  2. Step 2: Convert to fraction form
    805.19/1,201.26 = 717.53/x
  3. Step 3: Cross multiply
    805.19x = 1,201.26 × 717.53
  4. Step 4: Simplify right side
    805.19x = 861,934.08
  5. Step 5: Solve for x
    x = 861,934.08/805.19
  6. Step 6: Final answer
    x = 1,070.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.