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Finding the Fourth Proportional to 440.51, 659.39 and 394.14

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Solution

The fourth proportional to 440.51, 659.39 and 394.14 is: 589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.51 : 659.39 = 394.14 : x
  2. Step 2: Convert to fraction form
    440.51/659.39 = 394.14/x
  3. Step 3: Cross multiply
    440.51x = 659.39 × 394.14
  4. Step 4: Simplify right side
    440.51x = 259,891.97
  5. Step 5: Solve for x
    x = 259,891.97/440.51
  6. Step 6: Final answer
    x = 589.98

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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.