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Finding the Fourth Proportional to 667.05, 999.53 and 529.74

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Solution

The fourth proportional to 667.05, 999.53 and 529.74 is: 793.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.05 : 999.53 = 529.74 : x
  2. Step 2: Convert to fraction form
    667.05/999.53 = 529.74/x
  3. Step 3: Cross multiply
    667.05x = 999.53 × 529.74
  4. Step 4: Simplify right side
    667.05x = 529,488.37
  5. Step 5: Solve for x
    x = 529,488.37/667.05
  6. Step 6: Final answer
    x = 793.78

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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.