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Finding the Fourth Proportional to 634.15, 951.50 and 403.30

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Solution

The fourth proportional to 634.15, 951.50 and 403.30 is: 605.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.15 : 951.50 = 403.30 : x
  2. Step 2: Convert to fraction form
    634.15/951.50 = 403.30/x
  3. Step 3: Cross multiply
    634.15x = 951.50 × 403.30
  4. Step 4: Simplify right side
    634.15x = 383,739.95
  5. Step 5: Solve for x
    x = 383,739.95/634.15
  6. Step 6: Final answer
    x = 605.12

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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.