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Finding the Fourth Proportional to 441.51, 660.89 and 395.13

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Solution

The fourth proportional to 441.51, 660.89 and 395.13 is: 591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.51 : 660.89 = 395.13 : x
  2. Step 2: Convert to fraction form
    441.51/660.89 = 395.13/x
  3. Step 3: Cross multiply
    441.51x = 660.89 × 395.13
  4. Step 4: Simplify right side
    441.51x = 261,135.49
  5. Step 5: Solve for x
    x = 261,135.49/441.51
  6. Step 6: Final answer
    x = 591.46

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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.