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Finding the Fourth Proportional to 847.38, 1,169.42 and 474.41

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Solution

The fourth proportional to 847.38, 1,169.42 and 474.41 is: 654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.38 : 1,169.42 = 474.41 : x
  2. Step 2: Convert to fraction form
    847.38/1,169.42 = 474.41/x
  3. Step 3: Cross multiply
    847.38x = 1,169.42 × 474.41
  4. Step 4: Simplify right side
    847.38x = 554,776.32
  5. Step 5: Solve for x
    x = 554,776.32/847.38
  6. Step 6: Final answer
    x = 654.70

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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.