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Finding the Fourth Proportional to 608.18, 912.74 and 243.20

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Solution

The fourth proportional to 608.18, 912.74 and 243.20 is: 364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.18 : 912.74 = 243.20 : x
  2. Step 2: Convert to fraction form
    608.18/912.74 = 243.20/x
  3. Step 3: Cross multiply
    608.18x = 912.74 × 243.20
  4. Step 4: Simplify right side
    608.18x = 221,979.43
  5. Step 5: Solve for x
    x = 221,979.43/608.18
  6. Step 6: Final answer
    x = 364.99

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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.