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Finding the Fourth Proportional to 240.08, 331.43 and 152.87

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Solution

The fourth proportional to 240.08, 331.43 and 152.87 is: 211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.08 : 331.43 = 152.87 : x
  2. Step 2: Convert to fraction form
    240.08/331.43 = 152.87/x
  3. Step 3: Cross multiply
    240.08x = 331.43 × 152.87
  4. Step 4: Simplify right side
    240.08x = 50,663.28
  5. Step 5: Solve for x
    x = 50,663.28/240.08
  6. Step 6: Final answer
    x = 211.03

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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.