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Finding the Fourth Proportional to 351.99, 525.41 and 326.61

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Solution

The fourth proportional to 351.99, 525.41 and 326.61 is: 487.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.99 : 525.41 = 326.61 : x
  2. Step 2: Convert to fraction form
    351.99/525.41 = 326.61/x
  3. Step 3: Cross multiply
    351.99x = 525.41 × 326.61
  4. Step 4: Simplify right side
    351.99x = 171,602.53
  5. Step 5: Solve for x
    x = 171,602.53/351.99
  6. Step 6: Final answer
    x = 487.52

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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.