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Finding the Fourth Proportional to 847.52, 1,168.80 and 552.68

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Solution

The fourth proportional to 847.52, 1,168.80 and 552.68 is: 762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.52 : 1,168.80 = 552.68 : x
  2. Step 2: Convert to fraction form
    847.52/1,168.80 = 552.68/x
  3. Step 3: Cross multiply
    847.52x = 1,168.80 × 552.68
  4. Step 4: Simplify right side
    847.52x = 645,972.38
  5. Step 5: Solve for x
    x = 645,972.38/847.52
  6. Step 6: Final answer
    x = 762.19

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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.