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Finding the Fourth Proportional to 349.72, 482.52 and 275.81

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Solution

The fourth proportional to 349.72, 482.52 and 275.81 is: 380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.72 : 482.52 = 275.81 : x
  2. Step 2: Convert to fraction form
    349.72/482.52 = 275.81/x
  3. Step 3: Cross multiply
    349.72x = 482.52 × 275.81
  4. Step 4: Simplify right side
    349.72x = 133,083.84
  5. Step 5: Solve for x
    x = 133,083.84/349.72
  6. Step 6: Final answer
    x = 380.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.