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Finding the Fourth Proportional to 888.12, 1,226.97 and 679.14

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Solution

The fourth proportional to 888.12, 1,226.97 and 679.14 is: 938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.12 : 1,226.97 = 679.14 : x
  2. Step 2: Convert to fraction form
    888.12/1,226.97 = 679.14/x
  3. Step 3: Cross multiply
    888.12x = 1,226.97 × 679.14
  4. Step 4: Simplify right side
    888.12x = 833,284.41
  5. Step 5: Solve for x
    x = 833,284.41/888.12
  6. Step 6: Final answer
    x = 938.26

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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.