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Finding the Fourth Proportional to 228.24, 341.70 and 140.16

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Solution

The fourth proportional to 228.24, 341.70 and 140.16 is: 209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.24 : 341.70 = 140.16 : x
  2. Step 2: Convert to fraction form
    228.24/341.70 = 140.16/x
  3. Step 3: Cross multiply
    228.24x = 341.70 × 140.16
  4. Step 4: Simplify right side
    228.24x = 47,892.67
  5. Step 5: Solve for x
    x = 47,892.67/228.24
  6. Step 6: Final answer
    x = 209.83

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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.