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Finding the Fourth Proportional to 951.91, 1,313.76 and 558.97

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Solution

The fourth proportional to 951.91, 1,313.76 and 558.97 is: 771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.91 : 1,313.76 = 558.97 : x
  2. Step 2: Convert to fraction form
    951.91/1,313.76 = 558.97/x
  3. Step 3: Cross multiply
    951.91x = 1,313.76 × 558.97
  4. Step 4: Simplify right side
    951.91x = 734,352.43
  5. Step 5: Solve for x
    x = 734,352.43/951.91
  6. Step 6: Final answer
    x = 771.45

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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.