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Finding the Fourth Proportional to 351.18, 525.20 and 263.55

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Solution

The fourth proportional to 351.18, 525.20 and 263.55 is: 394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.18 : 525.20 = 263.55 : x
  2. Step 2: Convert to fraction form
    351.18/525.20 = 263.55/x
  3. Step 3: Cross multiply
    351.18x = 525.20 × 263.55
  4. Step 4: Simplify right side
    351.18x = 138,415.15
  5. Step 5: Solve for x
    x = 138,415.15/351.18
  6. Step 6: Final answer
    x = 394.14

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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.