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Finding the Fourth Proportional to 539.91, 808.38 and 494.55

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Solution

The fourth proportional to 539.91, 808.38 and 494.55 is: 740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.91 : 808.38 = 494.55 : x
  2. Step 2: Convert to fraction form
    539.91/808.38 = 494.55/x
  3. Step 3: Cross multiply
    539.91x = 808.38 × 494.55
  4. Step 4: Simplify right side
    539.91x = 399,784.33
  5. Step 5: Solve for x
    x = 399,784.33/539.91
  6. Step 6: Final answer
    x = 740.46

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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.