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Finding the Fourth Proportional to 604.88, 907.20 and 171.92

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Solution

The fourth proportional to 604.88, 907.20 and 171.92 is: 257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.88 : 907.20 = 171.92 : x
  2. Step 2: Convert to fraction form
    604.88/907.20 = 171.92/x
  3. Step 3: Cross multiply
    604.88x = 907.20 × 171.92
  4. Step 4: Simplify right side
    604.88x = 155,965.82
  5. Step 5: Solve for x
    x = 155,965.82/604.88
  6. Step 6: Final answer
    x = 257.85

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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.