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Finding the Fourth Proportional to 231.19, 346.78 and 60.19

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Solution

The fourth proportional to 231.19, 346.78 and 60.19 is: 90.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.19 : 346.78 = 60.19 : x
  2. Step 2: Convert to fraction form
    231.19/346.78 = 60.19/x
  3. Step 3: Cross multiply
    231.19x = 346.78 × 60.19
  4. Step 4: Simplify right side
    231.19x = 20,872.69
  5. Step 5: Solve for x
    x = 20,872.69/231.19
  6. Step 6: Final answer
    x = 90.28

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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.