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Finding the Fourth Proportional to 448.72, 671.34 and 275.44

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Solution

The fourth proportional to 448.72, 671.34 and 275.44 is: 412.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.72 : 671.34 = 275.44 : x
  2. Step 2: Convert to fraction form
    448.72/671.34 = 275.44/x
  3. Step 3: Cross multiply
    448.72x = 671.34 × 275.44
  4. Step 4: Simplify right side
    448.72x = 184,913.89
  5. Step 5: Solve for x
    x = 184,913.89/448.72
  6. Step 6: Final answer
    x = 412.09

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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.