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Finding the Fourth Proportional to 379.88, 568.56 and 235.70

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Solution

The fourth proportional to 379.88, 568.56 and 235.70 is: 352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.88 : 568.56 = 235.70 : x
  2. Step 2: Convert to fraction form
    379.88/568.56 = 235.70/x
  3. Step 3: Cross multiply
    379.88x = 568.56 × 235.70
  4. Step 4: Simplify right side
    379.88x = 134,009.59
  5. Step 5: Solve for x
    x = 134,009.59/379.88
  6. Step 6: Final answer
    x = 352.77

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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.