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Finding the Fourth Proportional to 439.80, 662.28 and 367.32

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Solution

The fourth proportional to 439.80, 662.28 and 367.32 is: 553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.80 : 662.28 = 367.32 : x
  2. Step 2: Convert to fraction form
    439.80/662.28 = 367.32/x
  3. Step 3: Cross multiply
    439.80x = 662.28 × 367.32
  4. Step 4: Simplify right side
    439.80x = 243,268.69
  5. Step 5: Solve for x
    x = 243,268.69/439.80
  6. Step 6: Final answer
    x = 553.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.