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Finding the Fourth Proportional to 608.13, 911.75 and 242.64

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Solution

The fourth proportional to 608.13, 911.75 and 242.64 is: 363.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.13 : 911.75 = 242.64 : x
  2. Step 2: Convert to fraction form
    608.13/911.75 = 242.64/x
  3. Step 3: Cross multiply
    608.13x = 911.75 × 242.64
  4. Step 4: Simplify right side
    608.13x = 221,225.81
  5. Step 5: Solve for x
    x = 221,225.81/608.13
  6. Step 6: Final answer
    x = 363.78

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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.