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Finding the Fourth Proportional to 666.70, 1,000.44 and 301.59

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Solution

The fourth proportional to 666.70, 1,000.44 and 301.59 is: 452.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.70 : 1,000.44 = 301.59 : x
  2. Step 2: Convert to fraction form
    666.70/1,000.44 = 301.59/x
  3. Step 3: Cross multiply
    666.70x = 1,000.44 × 301.59
  4. Step 4: Simplify right side
    666.70x = 301,722.70
  5. Step 5: Solve for x
    x = 301,722.70/666.70
  6. Step 6: Final answer
    x = 452.56

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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.