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Finding the Fourth Proportional to 950.55, 1,423.97 and 847.35

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Solution

The fourth proportional to 950.55, 1,423.97 and 847.35 is: 1,269.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.55 : 1,423.97 = 847.35 : x
  2. Step 2: Convert to fraction form
    950.55/1,423.97 = 847.35/x
  3. Step 3: Cross multiply
    950.55x = 1,423.97 × 847.35
  4. Step 4: Simplify right side
    950.55x = 1,206,596.74
  5. Step 5: Solve for x
    x = 1,206,596.74/950.55
  6. Step 6: Final answer
    x = 1,269.37

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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.