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Finding the Fourth Proportional to 379.07, 568.22 and 135.46

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Solution

The fourth proportional to 379.07, 568.22 and 135.46 is: 203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.07 : 568.22 = 135.46 : x
  2. Step 2: Convert to fraction form
    379.07/568.22 = 135.46/x
  3. Step 3: Cross multiply
    379.07x = 568.22 × 135.46
  4. Step 4: Simplify right side
    379.07x = 76,970.40
  5. Step 5: Solve for x
    x = 76,970.40/379.07
  6. Step 6: Final answer
    x = 203.05

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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.