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Finding the Fourth Proportional to 539.64, 808.74 and 401.58

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Solution

The fourth proportional to 539.64, 808.74 and 401.58 is: 601.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.64 : 808.74 = 401.58 : x
  2. Step 2: Convert to fraction form
    539.64/808.74 = 401.58/x
  3. Step 3: Cross multiply
    539.64x = 808.74 × 401.58
  4. Step 4: Simplify right side
    539.64x = 324,773.81
  5. Step 5: Solve for x
    x = 324,773.81/539.64
  6. Step 6: Final answer
    x = 601.83

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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.