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Finding the Fourth Proportional to 792.88, 1,182.80 and 729.36

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Solution

The fourth proportional to 792.88, 1,182.80 and 729.36 is: 1,088.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.88 : 1,182.80 = 729.36 : x
  2. Step 2: Convert to fraction form
    792.88/1,182.80 = 729.36/x
  3. Step 3: Cross multiply
    792.88x = 1,182.80 × 729.36
  4. Step 4: Simplify right side
    792.88x = 862,687.01
  5. Step 5: Solve for x
    x = 862,687.01/792.88
  6. Step 6: Final answer
    x = 1,088.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.