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Finding the Fourth Proportional to 666.96, 999.08 and 544

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Solution

The fourth proportional to 666.96, 999.08 and 544 is: 814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.96 : 999.08 = 544 : x
  2. Step 2: Convert to fraction form
    666.96/999.08 = 544/x
  3. Step 3: Cross multiply
    666.96x = 999.08 × 544
  4. Step 4: Simplify right side
    666.96x = 543,499.52
  5. Step 5: Solve for x
    x = 543,499.52/666.96
  6. Step 6: Final answer
    x = 814.89

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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.