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Finding the Fourth Proportional to 1,772.74, 2,658.08 and 677.18

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Solution

The fourth proportional to 1,772.74, 2,658.08 and 677.18 is: 1,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.74 : 2,658.08 = 677.18 : x
  2. Step 2: Convert to fraction form
    1,772.74/2,658.08 = 677.18/x
  3. Step 3: Cross multiply
    1,772.74x = 2,658.08 × 677.18
  4. Step 4: Simplify right side
    1,772.74x = 1,799,998.61
  5. Step 5: Solve for x
    x = 1,799,998.61/1,772.74
  6. Step 6: Final answer
    x = 1,015.38

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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.