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Finding the Fourth Proportional to 950.50, 1,425.76 and 625.79

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Solution

The fourth proportional to 950.50, 1,425.76 and 625.79 is: 938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.50 : 1,425.76 = 625.79 : x
  2. Step 2: Convert to fraction form
    950.50/1,425.76 = 625.79/x
  3. Step 3: Cross multiply
    950.50x = 1,425.76 × 625.79
  4. Step 4: Simplify right side
    950.50x = 892,228.35
  5. Step 5: Solve for x
    x = 892,228.35/950.50
  6. Step 6: Final answer
    x = 938.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.