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Finding the Fourth Proportional to 228.29, 342.29 and 156.13

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Solution

The fourth proportional to 228.29, 342.29 and 156.13 is: 234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.29 : 342.29 = 156.13 : x
  2. Step 2: Convert to fraction form
    228.29/342.29 = 156.13/x
  3. Step 3: Cross multiply
    228.29x = 342.29 × 156.13
  4. Step 4: Simplify right side
    228.29x = 53,441.27
  5. Step 5: Solve for x
    x = 53,441.27/228.29
  6. Step 6: Final answer
    x = 234.10

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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.