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Finding the Fourth Proportional to 441.25, 608.51 and 275.40

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Solution

The fourth proportional to 441.25, 608.51 and 275.40 is: 379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.25 : 608.51 = 275.40 : x
  2. Step 2: Convert to fraction form
    441.25/608.51 = 275.40/x
  3. Step 3: Cross multiply
    441.25x = 608.51 × 275.40
  4. Step 4: Simplify right side
    441.25x = 167,584.34
  5. Step 5: Solve for x
    x = 167,584.34/441.25
  6. Step 6: Final answer
    x = 379.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.