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Finding the Fourth Proportional to 448.82, 667.53 and 439.60

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Solution

The fourth proportional to 448.82, 667.53 and 439.60 is: 653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.82 : 667.53 = 439.60 : x
  2. Step 2: Convert to fraction form
    448.82/667.53 = 439.60/x
  3. Step 3: Cross multiply
    448.82x = 667.53 × 439.60
  4. Step 4: Simplify right side
    448.82x = 293,446.19
  5. Step 5: Solve for x
    x = 293,446.19/448.82
  6. Step 6: Final answer
    x = 653.82

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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.