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Finding the Fourth Proportional to 609.60, 914.46 and 193.15

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Solution

The fourth proportional to 609.60, 914.46 and 193.15 is: 289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.60 : 914.46 = 193.15 : x
  2. Step 2: Convert to fraction form
    609.60/914.46 = 193.15/x
  3. Step 3: Cross multiply
    609.60x = 914.46 × 193.15
  4. Step 4: Simplify right side
    609.60x = 176,624.92
  5. Step 5: Solve for x
    x = 176,624.92/609.60
  6. Step 6: Final answer
    x = 289.74

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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.