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Finding the Fourth Proportional to 246.58, 340.18 and 153.22

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Solution

The fourth proportional to 246.58, 340.18 and 153.22 is: 211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.58 : 340.18 = 153.22 : x
  2. Step 2: Convert to fraction form
    246.58/340.18 = 153.22/x
  3. Step 3: Cross multiply
    246.58x = 340.18 × 153.22
  4. Step 4: Simplify right side
    246.58x = 52,122.38
  5. Step 5: Solve for x
    x = 52,122.38/246.58
  6. Step 6: Final answer
    x = 211.38

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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.