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Finding the Fourth Proportional to 608.19, 912.72 and 243.06

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Solution

The fourth proportional to 608.19, 912.72 and 243.06 is: 364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.19 : 912.72 = 243.06 : x
  2. Step 2: Convert to fraction form
    608.19/912.72 = 243.06/x
  3. Step 3: Cross multiply
    608.19x = 912.72 × 243.06
  4. Step 4: Simplify right side
    608.19x = 221,846.98
  5. Step 5: Solve for x
    x = 221,846.98/608.19
  6. Step 6: Final answer
    x = 364.76

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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.