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Finding the Fourth Proportional to 951.70, 1,426.44 and 403.74

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Solution

The fourth proportional to 951.70, 1,426.44 and 403.74 is: 605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.70 : 1,426.44 = 403.74 : x
  2. Step 2: Convert to fraction form
    951.70/1,426.44 = 403.74/x
  3. Step 3: Cross multiply
    951.70x = 1,426.44 × 403.74
  4. Step 4: Simplify right side
    951.70x = 575,910.89
  5. Step 5: Solve for x
    x = 575,910.89/951.70
  6. Step 6: Final answer
    x = 605.14

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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.