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Finding the Fourth Proportional to 950.90, 1,425.94 and 561.68

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Solution

The fourth proportional to 950.90, 1,425.94 and 561.68 is: 842.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.90 : 1,425.94 = 561.68 : x
  2. Step 2: Convert to fraction form
    950.90/1,425.94 = 561.68/x
  3. Step 3: Cross multiply
    950.90x = 1,425.94 × 561.68
  4. Step 4: Simplify right side
    950.90x = 800,921.98
  5. Step 5: Solve for x
    x = 800,921.98/950.90
  6. Step 6: Final answer
    x = 842.28

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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.