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Finding the Fourth Proportional to 814.62, 1,124.18 and 465.32

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Solution

The fourth proportional to 814.62, 1,124.18 and 465.32 is: 642.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.62 : 1,124.18 = 465.32 : x
  2. Step 2: Convert to fraction form
    814.62/1,124.18 = 465.32/x
  3. Step 3: Cross multiply
    814.62x = 1,124.18 × 465.32
  4. Step 4: Simplify right side
    814.62x = 523,103.44
  5. Step 5: Solve for x
    x = 523,103.44/814.62
  6. Step 6: Final answer
    x = 642.14

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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.