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Finding the Fourth Proportional to 835.27, 1,151.80 and 717.63

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Solution

The fourth proportional to 835.27, 1,151.80 and 717.63 is: 989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.27 : 1,151.80 = 717.63 : x
  2. Step 2: Convert to fraction form
    835.27/1,151.80 = 717.63/x
  3. Step 3: Cross multiply
    835.27x = 1,151.80 × 717.63
  4. Step 4: Simplify right side
    835.27x = 826,566.23
  5. Step 5: Solve for x
    x = 826,566.23/835.27
  6. Step 6: Final answer
    x = 989.58

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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.