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Finding the Fourth Proportional to 608.06, 912.34 and 218.11

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Solution

The fourth proportional to 608.06, 912.34 and 218.11 is: 327.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.06 : 912.34 = 218.11 : x
  2. Step 2: Convert to fraction form
    608.06/912.34 = 218.11/x
  3. Step 3: Cross multiply
    608.06x = 912.34 × 218.11
  4. Step 4: Simplify right side
    608.06x = 198,990.48
  5. Step 5: Solve for x
    x = 198,990.48/608.06
  6. Step 6: Final answer
    x = 327.25

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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.