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Finding the Fourth Proportional to 218.74, 327.54 and 153.64

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Solution

The fourth proportional to 218.74, 327.54 and 153.64 is: 230.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.74 : 327.54 = 153.64 : x
  2. Step 2: Convert to fraction form
    218.74/327.54 = 153.64/x
  3. Step 3: Cross multiply
    218.74x = 327.54 × 153.64
  4. Step 4: Simplify right side
    218.74x = 50,323.25
  5. Step 5: Solve for x
    x = 50,323.25/218.74
  6. Step 6: Final answer
    x = 230.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.