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Finding the Fourth Proportional to 1,118.76, 1,677.08 and 377.85

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Solution

The fourth proportional to 1,118.76, 1,677.08 and 377.85 is: 566.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.76 : 1,677.08 = 377.85 : x
  2. Step 2: Convert to fraction form
    1,118.76/1,677.08 = 377.85/x
  3. Step 3: Cross multiply
    1,118.76x = 1,677.08 × 377.85
  4. Step 4: Simplify right side
    1,118.76x = 633,684.68
  5. Step 5: Solve for x
    x = 633,684.68/1,118.76
  6. Step 6: Final answer
    x = 566.42

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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.