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Finding the Fourth Proportional to 956.85, 1,438.74 and 880.73

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Solution

The fourth proportional to 956.85, 1,438.74 and 880.73 is: 1,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.85 : 1,438.74 = 880.73 : x
  2. Step 2: Convert to fraction form
    956.85/1,438.74 = 880.73/x
  3. Step 3: Cross multiply
    956.85x = 1,438.74 × 880.73
  4. Step 4: Simplify right side
    956.85x = 1,267,134.29
  5. Step 5: Solve for x
    x = 1,267,134.29/956.85
  6. Step 6: Final answer
    x = 1,324.28

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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.