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Finding the Fourth Proportional to 246.62, 340.40 and 153.35

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Solution

The fourth proportional to 246.62, 340.40 and 153.35 is: 211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.62 : 340.40 = 153.35 : x
  2. Step 2: Convert to fraction form
    246.62/340.40 = 153.35/x
  3. Step 3: Cross multiply
    246.62x = 340.40 × 153.35
  4. Step 4: Simplify right side
    246.62x = 52,200.34
  5. Step 5: Solve for x
    x = 52,200.34/246.62
  6. Step 6: Final answer
    x = 211.66

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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.