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Finding the Fourth Proportional to 608.45, 912.74 and 300.51

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Solution

The fourth proportional to 608.45, 912.74 and 300.51 is: 450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.45 : 912.74 = 300.51 : x
  2. Step 2: Convert to fraction form
    608.45/912.74 = 300.51/x
  3. Step 3: Cross multiply
    608.45x = 912.74 × 300.51
  4. Step 4: Simplify right side
    608.45x = 274,285.99
  5. Step 5: Solve for x
    x = 274,285.99/608.45
  6. Step 6: Final answer
    x = 450.80

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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.