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Finding the Fourth Proportional to 353.90, 533.55 and 349.29

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Solution

The fourth proportional to 353.90, 533.55 and 349.29 is: 526.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.90 : 533.55 = 349.29 : x
  2. Step 2: Convert to fraction form
    353.90/533.55 = 349.29/x
  3. Step 3: Cross multiply
    353.90x = 533.55 × 349.29
  4. Step 4: Simplify right side
    353.90x = 186,363.68
  5. Step 5: Solve for x
    x = 186,363.68/353.90
  6. Step 6: Final answer
    x = 526.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.