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Finding the Fourth Proportional to 407.26, 608.97 and 275.10

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Solution

The fourth proportional to 407.26, 608.97 and 275.10 is: 411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.26 : 608.97 = 275.10 : x
  2. Step 2: Convert to fraction form
    407.26/608.97 = 275.10/x
  3. Step 3: Cross multiply
    407.26x = 608.97 × 275.10
  4. Step 4: Simplify right side
    407.26x = 167,527.65
  5. Step 5: Solve for x
    x = 167,527.65/407.26
  6. Step 6: Final answer
    x = 411.35

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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.