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Finding the Fourth Proportional to 448.77, 673.56 and 266.40

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Solution

The fourth proportional to 448.77, 673.56 and 266.40 is: 399.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.77 : 673.56 = 266.40 : x
  2. Step 2: Convert to fraction form
    448.77/673.56 = 266.40/x
  3. Step 3: Cross multiply
    448.77x = 673.56 × 266.40
  4. Step 4: Simplify right side
    448.77x = 179,436.38
  5. Step 5: Solve for x
    x = 179,436.38/448.77
  6. Step 6: Final answer
    x = 399.84

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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.