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Finding the Fourth Proportional to 608.89, 912.71 and 300.55

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Solution

The fourth proportional to 608.89, 912.71 and 300.55 is: 450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.89 : 912.71 = 300.55 : x
  2. Step 2: Convert to fraction form
    608.89/912.71 = 300.55/x
  3. Step 3: Cross multiply
    608.89x = 912.71 × 300.55
  4. Step 4: Simplify right side
    608.89x = 274,313.49
  5. Step 5: Solve for x
    x = 274,313.49/608.89
  6. Step 6: Final answer
    x = 450.51

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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.