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Finding the Fourth Proportional to 951.94, 1,313.18 and 656.70

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Solution

The fourth proportional to 951.94, 1,313.18 and 656.70 is: 905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.94 : 1,313.18 = 656.70 : x
  2. Step 2: Convert to fraction form
    951.94/1,313.18 = 656.70/x
  3. Step 3: Cross multiply
    951.94x = 1,313.18 × 656.70
  4. Step 4: Simplify right side
    951.94x = 862,365.31
  5. Step 5: Solve for x
    x = 862,365.31/951.94
  6. Step 6: Final answer
    x = 905.90

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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.