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Finding the Fourth Proportional to 850.61, 1,171.38 and 588.17

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Solution

The fourth proportional to 850.61, 1,171.38 and 588.17 is: 809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.61 : 1,171.38 = 588.17 : x
  2. Step 2: Convert to fraction form
    850.61/1,171.38 = 588.17/x
  3. Step 3: Cross multiply
    850.61x = 1,171.38 × 588.17
  4. Step 4: Simplify right side
    850.61x = 688,970.57
  5. Step 5: Solve for x
    x = 688,970.57/850.61
  6. Step 6: Final answer
    x = 809.97

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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.