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Finding the Fourth Proportional to 951.98, 1,427.76 and 404.55

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Solution

The fourth proportional to 951.98, 1,427.76 and 404.55 is: 606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.98 : 1,427.76 = 404.55 : x
  2. Step 2: Convert to fraction form
    951.98/1,427.76 = 404.55/x
  3. Step 3: Cross multiply
    951.98x = 1,427.76 × 404.55
  4. Step 4: Simplify right side
    951.98x = 577,600.31
  5. Step 5: Solve for x
    x = 577,600.31/951.98
  6. Step 6: Final answer
    x = 606.74

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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.