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Finding the Fourth Proportional to 666.29, 999.44 and 529.43

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Solution

The fourth proportional to 666.29, 999.44 and 529.43 is: 794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.29 : 999.44 = 529.43 : x
  2. Step 2: Convert to fraction form
    666.29/999.44 = 529.43/x
  3. Step 3: Cross multiply
    666.29x = 999.44 × 529.43
  4. Step 4: Simplify right side
    666.29x = 529,131.29
  5. Step 5: Solve for x
    x = 529,131.29/666.29
  6. Step 6: Final answer
    x = 794.15

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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.