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Finding the Fourth Proportional to 149.72, 223.51 and 141.08

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Solution

The fourth proportional to 149.72, 223.51 and 141.08 is: 210.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.72 : 223.51 = 141.08 : x
  2. Step 2: Convert to fraction form
    149.72/223.51 = 141.08/x
  3. Step 3: Cross multiply
    149.72x = 223.51 × 141.08
  4. Step 4: Simplify right side
    149.72x = 31,532.79
  5. Step 5: Solve for x
    x = 31,532.79/149.72
  6. Step 6: Final answer
    x = 210.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.