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Finding the Fourth Proportional to 441.10, 608.45 and 291.72

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Solution

The fourth proportional to 441.10, 608.45 and 291.72 is: 402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.10 : 608.45 = 291.72 : x
  2. Step 2: Convert to fraction form
    441.10/608.45 = 291.72/x
  3. Step 3: Cross multiply
    441.10x = 608.45 × 291.72
  4. Step 4: Simplify right side
    441.10x = 177,497.83
  5. Step 5: Solve for x
    x = 177,497.83/441.10
  6. Step 6: Final answer
    x = 402.40

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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.