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Finding the Fourth Proportional to 441.55, 661.83 and 343.32

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Solution

The fourth proportional to 441.55, 661.83 and 343.32 is: 514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.55 : 661.83 = 343.32 : x
  2. Step 2: Convert to fraction form
    441.55/661.83 = 343.32/x
  3. Step 3: Cross multiply
    441.55x = 661.83 × 343.32
  4. Step 4: Simplify right side
    441.55x = 227,219.48
  5. Step 5: Solve for x
    x = 227,219.48/441.55
  6. Step 6: Final answer
    x = 514.60

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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.