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Finding the Fourth Proportional to 228.38, 342.12 and 130.58

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Solution

The fourth proportional to 228.38, 342.12 and 130.58 is: 195.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.38 : 342.12 = 130.58 : x
  2. Step 2: Convert to fraction form
    228.38/342.12 = 130.58/x
  3. Step 3: Cross multiply
    228.38x = 342.12 × 130.58
  4. Step 4: Simplify right side
    228.38x = 44,674.03
  5. Step 5: Solve for x
    x = 44,674.03/228.38
  6. Step 6: Final answer
    x = 195.61

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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.