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Finding the Fourth Proportional to 866.17, 1,194.87 and 656.38

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Solution

The fourth proportional to 866.17, 1,194.87 and 656.38 is: 905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.17 : 1,194.87 = 656.38 : x
  2. Step 2: Convert to fraction form
    866.17/1,194.87 = 656.38/x
  3. Step 3: Cross multiply
    866.17x = 1,194.87 × 656.38
  4. Step 4: Simplify right side
    866.17x = 784,285.78
  5. Step 5: Solve for x
    x = 784,285.78/866.17
  6. Step 6: Final answer
    x = 905.47

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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.