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Finding the Fourth Proportional to 814.60, 1,124.22 and 482.86

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Solution

The fourth proportional to 814.60, 1,124.22 and 482.86 is: 666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.60 : 1,124.22 = 482.86 : x
  2. Step 2: Convert to fraction form
    814.60/1,124.22 = 482.86/x
  3. Step 3: Cross multiply
    814.60x = 1,124.22 × 482.86
  4. Step 4: Simplify right side
    814.60x = 542,840.87
  5. Step 5: Solve for x
    x = 542,840.87/814.60
  6. Step 6: Final answer
    x = 666.39

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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.