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Finding the Fourth Proportional to 951.99, 1,426.91 and 930.39

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Solution

The fourth proportional to 951.99, 1,426.91 and 930.39 is: 1,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.99 : 1,426.91 = 930.39 : x
  2. Step 2: Convert to fraction form
    951.99/1,426.91 = 930.39/x
  3. Step 3: Cross multiply
    951.99x = 1,426.91 × 930.39
  4. Step 4: Simplify right side
    951.99x = 1,327,578.14
  5. Step 5: Solve for x
    x = 1,327,578.14/951.99
  6. Step 6: Final answer
    x = 1,394.53

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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.