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Finding the Fourth Proportional to 608.71, 912.13 and 453.91

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Solution

The fourth proportional to 608.71, 912.13 and 453.91 is: 680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.71 : 912.13 = 453.91 : x
  2. Step 2: Convert to fraction form
    608.71/912.13 = 453.91/x
  3. Step 3: Cross multiply
    608.71x = 912.13 × 453.91
  4. Step 4: Simplify right side
    608.71x = 414,024.93
  5. Step 5: Solve for x
    x = 414,024.93/608.71
  6. Step 6: Final answer
    x = 680.17

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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.