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Finding the Fourth Proportional to 147.22, 219.75 and 141.41

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Solution

The fourth proportional to 147.22, 219.75 and 141.41 is: 211.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.22 : 219.75 = 141.41 : x
  2. Step 2: Convert to fraction form
    147.22/219.75 = 141.41/x
  3. Step 3: Cross multiply
    147.22x = 219.75 × 141.41
  4. Step 4: Simplify right side
    147.22x = 31,074.87
  5. Step 5: Solve for x
    x = 31,074.87/147.22
  6. Step 6: Final answer
    x = 211.08

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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.