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Finding the Fourth Proportional to 216.10, 298.35 and 141.43

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Solution

The fourth proportional to 216.10, 298.35 and 141.43 is: 195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.10 : 298.35 = 141.43 : x
  2. Step 2: Convert to fraction form
    216.10/298.35 = 141.43/x
  3. Step 3: Cross multiply
    216.10x = 298.35 × 141.43
  4. Step 4: Simplify right side
    216.10x = 42,195.64
  5. Step 5: Solve for x
    x = 42,195.64/216.10
  6. Step 6: Final answer
    x = 195.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.