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Finding the Fourth Proportional to 449.41, 674.07 and 436.06

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Solution

The fourth proportional to 449.41, 674.07 and 436.06 is: 654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.41 : 674.07 = 436.06 : x
  2. Step 2: Convert to fraction form
    449.41/674.07 = 436.06/x
  3. Step 3: Cross multiply
    449.41x = 674.07 × 436.06
  4. Step 4: Simplify right side
    449.41x = 293,934.96
  5. Step 5: Solve for x
    x = 293,934.96/449.41
  6. Step 6: Final answer
    x = 654.05

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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.