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Finding the Fourth Proportional to 436.60, 654.69 and 254.05

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Solution

The fourth proportional to 436.60, 654.69 and 254.05 is: 380.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.60 : 654.69 = 254.05 : x
  2. Step 2: Convert to fraction form
    436.60/654.69 = 254.05/x
  3. Step 3: Cross multiply
    436.60x = 654.69 × 254.05
  4. Step 4: Simplify right side
    436.60x = 166,323.99
  5. Step 5: Solve for x
    x = 166,323.99/436.60
  6. Step 6: Final answer
    x = 380.95

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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.