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Finding the Fourth Proportional to 215.18, 297.08 and 141.63

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Solution

The fourth proportional to 215.18, 297.08 and 141.63 is: 195.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.18 : 297.08 = 141.63 : x
  2. Step 2: Convert to fraction form
    215.18/297.08 = 141.63/x
  3. Step 3: Cross multiply
    215.18x = 297.08 × 141.63
  4. Step 4: Simplify right side
    215.18x = 42,073.96
  5. Step 5: Solve for x
    x = 42,073.96/215.18
  6. Step 6: Final answer
    x = 195.53

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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.