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Finding the Fourth Proportional to 1,052.68, 1,453.46 and 679.88

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Solution

The fourth proportional to 1,052.68, 1,453.46 and 679.88 is: 938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.68 : 1,453.46 = 679.88 : x
  2. Step 2: Convert to fraction form
    1,052.68/1,453.46 = 679.88/x
  3. Step 3: Cross multiply
    1,052.68x = 1,453.46 × 679.88
  4. Step 4: Simplify right side
    1,052.68x = 988,178.38
  5. Step 5: Solve for x
    x = 988,178.38/1,052.68
  6. Step 6: Final answer
    x = 938.73

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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.