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Finding the Fourth Proportional to 844.32, 1,266.72 and 479.04

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Solution

The fourth proportional to 844.32, 1,266.72 and 479.04 is: 718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.32 : 1,266.72 = 479.04 : x
  2. Step 2: Convert to fraction form
    844.32/1,266.72 = 479.04/x
  3. Step 3: Cross multiply
    844.32x = 1,266.72 × 479.04
  4. Step 4: Simplify right side
    844.32x = 606,809.55
  5. Step 5: Solve for x
    x = 606,809.55/844.32
  6. Step 6: Final answer
    x = 718.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.