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Finding the Fourth Proportional to 835.76, 1,146.16 and 800.72

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Solution

The fourth proportional to 835.76, 1,146.16 and 800.72 is: 1,098.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.76 : 1,146.16 = 800.72 : x
  2. Step 2: Convert to fraction form
    835.76/1,146.16 = 800.72/x
  3. Step 3: Cross multiply
    835.76x = 1,146.16 × 800.72
  4. Step 4: Simplify right side
    835.76x = 917,753.24
  5. Step 5: Solve for x
    x = 917,753.24/835.76
  6. Step 6: Final answer
    x = 1,098.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.