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Finding the Fourth Proportional to 624.24, 938.78 and 604.80

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Solution

The fourth proportional to 624.24, 938.78 and 604.80 is: 909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.24 : 938.78 = 604.80 : x
  2. Step 2: Convert to fraction form
    624.24/938.78 = 604.80/x
  3. Step 3: Cross multiply
    624.24x = 938.78 × 604.80
  4. Step 4: Simplify right side
    624.24x = 567,774.14
  5. Step 5: Solve for x
    x = 567,774.14/624.24
  6. Step 6: Final answer
    x = 909.54

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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.