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Finding the Fourth Proportional to 441.12, 608.59 and 275.20

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Solution

The fourth proportional to 441.12, 608.59 and 275.20 is: 379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.12 : 608.59 = 275.20 : x
  2. Step 2: Convert to fraction form
    441.12/608.59 = 275.20/x
  3. Step 3: Cross multiply
    441.12x = 608.59 × 275.20
  4. Step 4: Simplify right side
    441.12x = 167,483.97
  5. Step 5: Solve for x
    x = 167,483.97/441.12
  6. Step 6: Final answer
    x = 379.68

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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.