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Finding the Fourth Proportional to 571.08, 787.92 and 349.82

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Solution

The fourth proportional to 571.08, 787.92 and 349.82 is: 482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.08 : 787.92 = 349.82 : x
  2. Step 2: Convert to fraction form
    571.08/787.92 = 349.82/x
  3. Step 3: Cross multiply
    571.08x = 787.92 × 349.82
  4. Step 4: Simplify right side
    571.08x = 275,630.17
  5. Step 5: Solve for x
    x = 275,630.17/571.08
  6. Step 6: Final answer
    x = 482.65

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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.