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Finding the Fourth Proportional to 246.60, 340.20 and 153.32

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Solution

The fourth proportional to 246.60, 340.20 and 153.32 is: 211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.60 : 340.20 = 153.32 : x
  2. Step 2: Convert to fraction form
    246.60/340.20 = 153.32/x
  3. Step 3: Cross multiply
    246.60x = 340.20 × 153.32
  4. Step 4: Simplify right side
    246.60x = 52,157.76
  5. Step 5: Solve for x
    x = 52,157.76/246.60
  6. Step 6: Final answer
    x = 211.51

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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.