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Finding the Fourth Proportional to 951.24, 1,312.70 and 558.34

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Solution

The fourth proportional to 951.24, 1,312.70 and 558.34 is: 770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.24 : 1,312.70 = 558.34 : x
  2. Step 2: Convert to fraction form
    951.24/1,312.70 = 558.34/x
  3. Step 3: Cross multiply
    951.24x = 1,312.70 × 558.34
  4. Step 4: Simplify right side
    951.24x = 732,932.92
  5. Step 5: Solve for x
    x = 732,932.92/951.24
  6. Step 6: Final answer
    x = 770.50

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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.