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Finding the Fourth Proportional to 539.04, 808.48 and 214.09

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Solution

The fourth proportional to 539.04, 808.48 and 214.09 is: 321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.04 : 808.48 = 214.09 : x
  2. Step 2: Convert to fraction form
    539.04/808.48 = 214.09/x
  3. Step 3: Cross multiply
    539.04x = 808.48 × 214.09
  4. Step 4: Simplify right side
    539.04x = 173,087.48
  5. Step 5: Solve for x
    x = 173,087.48/539.04
  6. Step 6: Final answer
    x = 321.10

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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.