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Finding the Fourth Proportional to 951.77, 1,426.44 and 489.47

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Solution

The fourth proportional to 951.77, 1,426.44 and 489.47 is: 733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.77 : 1,426.44 = 489.47 : x
  2. Step 2: Convert to fraction form
    951.77/1,426.44 = 489.47/x
  3. Step 3: Cross multiply
    951.77x = 1,426.44 × 489.47
  4. Step 4: Simplify right side
    951.77x = 698,194.29
  5. Step 5: Solve for x
    x = 698,194.29/951.77
  6. Step 6: Final answer
    x = 733.57

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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.