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Finding the Fourth Proportional to 604.05, 905.71 and 291.55

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Solution

The fourth proportional to 604.05, 905.71 and 291.55 is: 437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.05 : 905.71 = 291.55 : x
  2. Step 2: Convert to fraction form
    604.05/905.71 = 291.55/x
  3. Step 3: Cross multiply
    604.05x = 905.71 × 291.55
  4. Step 4: Simplify right side
    604.05x = 264,059.75
  5. Step 5: Solve for x
    x = 264,059.75/604.05
  6. Step 6: Final answer
    x = 437.15

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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.