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Finding the Fourth Proportional to 847.31, 1,169.29 and 474.28

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Solution

The fourth proportional to 847.31, 1,169.29 and 474.28 is: 654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.31 : 1,169.29 = 474.28 : x
  2. Step 2: Convert to fraction form
    847.31/1,169.29 = 474.28/x
  3. Step 3: Cross multiply
    847.31x = 1,169.29 × 474.28
  4. Step 4: Simplify right side
    847.31x = 554,568.53
  5. Step 5: Solve for x
    x = 554,568.53/847.31
  6. Step 6: Final answer
    x = 654.51

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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.