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Finding the Fourth Proportional to 648, 970.68 and 539.44

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Solution

The fourth proportional to 648, 970.68 and 539.44 is: 808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    648 : 970.68 = 539.44 : x
  2. Step 2: Convert to fraction form
    648/970.68 = 539.44/x
  3. Step 3: Cross multiply
    648x = 970.68 × 539.44
  4. Step 4: Simplify right side
    648x = 523,623.62
  5. Step 5: Solve for x
    x = 523,623.62/648
  6. Step 6: Final answer
    x = 808.06

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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.