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Finding the Fourth Proportional to 353.94, 528.11 and 351.90

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Solution

The fourth proportional to 353.94, 528.11 and 351.90 is: 525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.94 : 528.11 = 351.90 : x
  2. Step 2: Convert to fraction form
    353.94/528.11 = 351.90/x
  3. Step 3: Cross multiply
    353.94x = 528.11 × 351.90
  4. Step 4: Simplify right side
    353.94x = 185,840.15
  5. Step 5: Solve for x
    x = 185,840.15/353.94
  6. Step 6: Final answer
    x = 525.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.