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Finding the Fourth Proportional to 892.27, 1,230.37 and 626.66

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Solution

The fourth proportional to 892.27, 1,230.37 and 626.66 is: 864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.27 : 1,230.37 = 626.66 : x
  2. Step 2: Convert to fraction form
    892.27/1,230.37 = 626.66/x
  3. Step 3: Cross multiply
    892.27x = 1,230.37 × 626.66
  4. Step 4: Simplify right side
    892.27x = 771,023.66
  5. Step 5: Solve for x
    x = 771,023.66/892.27
  6. Step 6: Final answer
    x = 864.11

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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.