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Finding the Fourth Proportional to 539.79, 808.44 and 322.89

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Solution

The fourth proportional to 539.79, 808.44 and 322.89 is: 483.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.79 : 808.44 = 322.89 : x
  2. Step 2: Convert to fraction form
    539.79/808.44 = 322.89/x
  3. Step 3: Cross multiply
    539.79x = 808.44 × 322.89
  4. Step 4: Simplify right side
    539.79x = 261,037.19
  5. Step 5: Solve for x
    x = 261,037.19/539.79
  6. Step 6: Final answer
    x = 483.59

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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.