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Finding the Fourth Proportional to 1,134.91, 1,566.12 and 637.57

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Solution

The fourth proportional to 1,134.91, 1,566.12 and 637.57 is: 879.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.91 : 1,566.12 = 637.57 : x
  2. Step 2: Convert to fraction form
    1,134.91/1,566.12 = 637.57/x
  3. Step 3: Cross multiply
    1,134.91x = 1,566.12 × 637.57
  4. Step 4: Simplify right side
    1,134.91x = 998,511.13
  5. Step 5: Solve for x
    x = 998,511.13/1,134.91
  6. Step 6: Final answer
    x = 879.82

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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.