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Finding the Fourth Proportional to 1,772.32, 2,658.80 and 798.88

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Solution

The fourth proportional to 1,772.32, 2,658.80 and 798.88 is: 1,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.32 : 2,658.80 = 798.88 : x
  2. Step 2: Convert to fraction form
    1,772.32/2,658.80 = 798.88/x
  3. Step 3: Cross multiply
    1,772.32x = 2,658.80 × 798.88
  4. Step 4: Simplify right side
    1,772.32x = 2,124,062.14
  5. Step 5: Solve for x
    x = 2,124,062.14/1,772.32
  6. Step 6: Final answer
    x = 1,198.46

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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.