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Finding the Fourth Proportional to 441.60, 658.56 and 436.80

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Solution

The fourth proportional to 441.60, 658.56 and 436.80 is: 651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.60 : 658.56 = 436.80 : x
  2. Step 2: Convert to fraction form
    441.60/658.56 = 436.80/x
  3. Step 3: Cross multiply
    441.60x = 658.56 × 436.80
  4. Step 4: Simplify right side
    441.60x = 287,659.01
  5. Step 5: Solve for x
    x = 287,659.01/441.60
  6. Step 6: Final answer
    x = 651.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.