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Finding the Fourth Proportional to 228.52, 342.72 and 106.72

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Solution

The fourth proportional to 228.52, 342.72 and 106.72 is: 160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.52 : 342.72 = 106.72 : x
  2. Step 2: Convert to fraction form
    228.52/342.72 = 106.72/x
  3. Step 3: Cross multiply
    228.52x = 342.72 × 106.72
  4. Step 4: Simplify right side
    228.52x = 36,575.08
  5. Step 5: Solve for x
    x = 36,575.08/228.52
  6. Step 6: Final answer
    x = 160.05

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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.