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Finding the Fourth Proportional to 867.68, 1,197.41 and 474.71

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Solution

The fourth proportional to 867.68, 1,197.41 and 474.71 is: 655.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.68 : 1,197.41 = 474.71 : x
  2. Step 2: Convert to fraction form
    867.68/1,197.41 = 474.71/x
  3. Step 3: Cross multiply
    867.68x = 1,197.41 × 474.71
  4. Step 4: Simplify right side
    867.68x = 568,414.14
  5. Step 5: Solve for x
    x = 568,414.14/867.68
  6. Step 6: Final answer
    x = 655.09

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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.