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Finding the Fourth Proportional to 608.49, 912.78 and 243.30

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Solution

The fourth proportional to 608.49, 912.78 and 243.30 is: 364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.49 : 912.78 = 243.30 : x
  2. Step 2: Convert to fraction form
    608.49/912.78 = 243.30/x
  3. Step 3: Cross multiply
    608.49x = 912.78 × 243.30
  4. Step 4: Simplify right side
    608.49x = 222,079.37
  5. Step 5: Solve for x
    x = 222,079.37/608.49
  6. Step 6: Final answer
    x = 364.97

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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.