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Finding the Fourth Proportional to 440.87, 661.39 and 245.99

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Solution

The fourth proportional to 440.87, 661.39 and 245.99 is: 369.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.87 : 661.39 = 245.99 : x
  2. Step 2: Convert to fraction form
    440.87/661.39 = 245.99/x
  3. Step 3: Cross multiply
    440.87x = 661.39 × 245.99
  4. Step 4: Simplify right side
    440.87x = 162,693.34
  5. Step 5: Solve for x
    x = 162,693.34/440.87
  6. Step 6: Final answer
    x = 369.03

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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.