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Finding the Fourth Proportional to 814.59, 1,125.06 and 552.15

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Solution

The fourth proportional to 814.59, 1,125.06 and 552.15 is: 762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.59 : 1,125.06 = 552.15 : x
  2. Step 2: Convert to fraction form
    814.59/1,125.06 = 552.15/x
  3. Step 3: Cross multiply
    814.59x = 1,125.06 × 552.15
  4. Step 4: Simplify right side
    814.59x = 621,201.88
  5. Step 5: Solve for x
    x = 621,201.88/814.59
  6. Step 6: Final answer
    x = 762.59

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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.