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Finding the Fourth Proportional to 440.98, 661.05 and 166.99

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Solution

The fourth proportional to 440.98, 661.05 and 166.99 is: 250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.98 : 661.05 = 166.99 : x
  2. Step 2: Convert to fraction form
    440.98/661.05 = 166.99/x
  3. Step 3: Cross multiply
    440.98x = 661.05 × 166.99
  4. Step 4: Simplify right side
    440.98x = 110,388.74
  5. Step 5: Solve for x
    x = 110,388.74/440.98
  6. Step 6: Final answer
    x = 250.33

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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.