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Finding the Fourth Proportional to 440.85, 660.53 and 266.99

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Solution

The fourth proportional to 440.85, 660.53 and 266.99 is: 400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.85 : 660.53 = 266.99 : x
  2. Step 2: Convert to fraction form
    440.85/660.53 = 266.99/x
  3. Step 3: Cross multiply
    440.85x = 660.53 × 266.99
  4. Step 4: Simplify right side
    440.85x = 176,350.27
  5. Step 5: Solve for x
    x = 176,350.27/440.85
  6. Step 6: Final answer
    x = 400.02

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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.