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Finding the Fourth Proportional to 1,474.32, 2,207.52 and 779.54

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Solution

The fourth proportional to 1,474.32, 2,207.52 and 779.54 is: 1,167.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.32 : 2,207.52 = 779.54 : x
  2. Step 2: Convert to fraction form
    1,474.32/2,207.52 = 779.54/x
  3. Step 3: Cross multiply
    1,474.32x = 2,207.52 × 779.54
  4. Step 4: Simplify right side
    1,474.32x = 1,720,850.14
  5. Step 5: Solve for x
    x = 1,720,850.14/1,474.32
  6. Step 6: Final answer
    x = 1,167.22

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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.