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Finding the Fourth Proportional to 847.05, 1,168.87 and 474

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Solution

The fourth proportional to 847.05, 1,168.87 and 474 is: 654.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.05 : 1,168.87 = 474 : x
  2. Step 2: Convert to fraction form
    847.05/1,168.87 = 474/x
  3. Step 3: Cross multiply
    847.05x = 1,168.87 × 474
  4. Step 4: Simplify right side
    847.05x = 554,044.38
  5. Step 5: Solve for x
    x = 554,044.38/847.05
  6. Step 6: Final answer
    x = 654.09

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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.