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Finding the Fourth Proportional to 246.63, 340.18 and 153.28

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Solution

The fourth proportional to 246.63, 340.18 and 153.28 is: 211.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.63 : 340.18 = 153.28 : x
  2. Step 2: Convert to fraction form
    246.63/340.18 = 153.28/x
  3. Step 3: Cross multiply
    246.63x = 340.18 × 153.28
  4. Step 4: Simplify right side
    246.63x = 52,142.79
  5. Step 5: Solve for x
    x = 52,142.79/246.63
  6. Step 6: Final answer
    x = 211.42

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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.