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Finding the Fourth Proportional to 1,199.50, 1,799.22 and 377.77

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Solution

The fourth proportional to 1,199.50, 1,799.22 and 377.77 is: 566.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.50 : 1,799.22 = 377.77 : x
  2. Step 2: Convert to fraction form
    1,199.50/1,799.22 = 377.77/x
  3. Step 3: Cross multiply
    1,199.50x = 1,799.22 × 377.77
  4. Step 4: Simplify right side
    1,199.50x = 679,691.34
  5. Step 5: Solve for x
    x = 679,691.34/1,199.50
  6. Step 6: Final answer
    x = 566.65

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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.