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Finding the Fourth Proportional to 886.24, 1,222.17 and 606.79

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Solution

The fourth proportional to 886.24, 1,222.17 and 606.79 is: 836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.24 : 1,222.17 = 606.79 : x
  2. Step 2: Convert to fraction form
    886.24/1,222.17 = 606.79/x
  3. Step 3: Cross multiply
    886.24x = 1,222.17 × 606.79
  4. Step 4: Simplify right side
    886.24x = 741,594.42
  5. Step 5: Solve for x
    x = 741,594.42/886.24
  6. Step 6: Final answer
    x = 836.79

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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.