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Finding the Fourth Proportional to 608.28, 912.51 and 425.94

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Solution

The fourth proportional to 608.28, 912.51 and 425.94 is: 638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.28 : 912.51 = 425.94 : x
  2. Step 2: Convert to fraction form
    608.28/912.51 = 425.94/x
  3. Step 3: Cross multiply
    608.28x = 912.51 × 425.94
  4. Step 4: Simplify right side
    608.28x = 388,674.51
  5. Step 5: Solve for x
    x = 388,674.51/608.28
  6. Step 6: Final answer
    x = 638.97

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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.