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Finding the Fourth Proportional to 246.42, 340.13 and 153.18

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Solution

The fourth proportional to 246.42, 340.13 and 153.18 is: 211.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.42 : 340.13 = 153.18 : x
  2. Step 2: Convert to fraction form
    246.42/340.13 = 153.18/x
  3. Step 3: Cross multiply
    246.42x = 340.13 × 153.18
  4. Step 4: Simplify right side
    246.42x = 52,101.11
  5. Step 5: Solve for x
    x = 52,101.11/246.42
  6. Step 6: Final answer
    x = 211.43

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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.