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Finding the Fourth Proportional to 608.25, 912.38 and 197.42

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Solution

The fourth proportional to 608.25, 912.38 and 197.42 is: 296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.25 : 912.38 = 197.42 : x
  2. Step 2: Convert to fraction form
    608.25/912.38 = 197.42/x
  3. Step 3: Cross multiply
    608.25x = 912.38 × 197.42
  4. Step 4: Simplify right side
    608.25x = 180,116.51
  5. Step 5: Solve for x
    x = 180,116.51/608.25
  6. Step 6: Final answer
    x = 296.12

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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.