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Finding the Fourth Proportional to 539.95, 744.78 and 441.55

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Solution

The fourth proportional to 539.95, 744.78 and 441.55 is: 609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.95 : 744.78 = 441.55 : x
  2. Step 2: Convert to fraction form
    539.95/744.78 = 441.55/x
  3. Step 3: Cross multiply
    539.95x = 744.78 × 441.55
  4. Step 4: Simplify right side
    539.95x = 328,857.61
  5. Step 5: Solve for x
    x = 328,857.61/539.95
  6. Step 6: Final answer
    x = 609.05

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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.