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Finding the Fourth Proportional to 605.05, 907.21 and 292.55

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Solution

The fourth proportional to 605.05, 907.21 and 292.55 is: 438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.05 : 907.21 = 292.55 : x
  2. Step 2: Convert to fraction form
    605.05/907.21 = 292.55/x
  3. Step 3: Cross multiply
    605.05x = 907.21 × 292.55
  4. Step 4: Simplify right side
    605.05x = 265,404.29
  5. Step 5: Solve for x
    x = 265,404.29/605.05
  6. Step 6: Final answer
    x = 438.65

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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.