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Finding the Fourth Proportional to 1,049.10, 1,447.10 and 694.92

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Solution

The fourth proportional to 1,049.10, 1,447.10 and 694.92 is: 958.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.10 : 1,447.10 = 694.92 : x
  2. Step 2: Convert to fraction form
    1,049.10/1,447.10 = 694.92/x
  3. Step 3: Cross multiply
    1,049.10x = 1,447.10 × 694.92
  4. Step 4: Simplify right side
    1,049.10x = 1,005,618.73
  5. Step 5: Solve for x
    x = 1,005,618.73/1,049.10
  6. Step 6: Final answer
    x = 958.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.