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Finding the Fourth Proportional to 876.32, 1,209.22 and 483.27

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Solution

The fourth proportional to 876.32, 1,209.22 and 483.27 is: 666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.32 : 1,209.22 = 483.27 : x
  2. Step 2: Convert to fraction form
    876.32/1,209.22 = 483.27/x
  3. Step 3: Cross multiply
    876.32x = 1,209.22 × 483.27
  4. Step 4: Simplify right side
    876.32x = 584,373.70
  5. Step 5: Solve for x
    x = 584,373.70/876.32
  6. Step 6: Final answer
    x = 666.85

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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.