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Finding the Fourth Proportional to 358.96, 535.55 and 326.56

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Solution

The fourth proportional to 358.96, 535.55 and 326.56 is: 487.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.96 : 535.55 = 326.56 : x
  2. Step 2: Convert to fraction form
    358.96/535.55 = 326.56/x
  3. Step 3: Cross multiply
    358.96x = 535.55 × 326.56
  4. Step 4: Simplify right side
    358.96x = 174,889.21
  5. Step 5: Solve for x
    x = 174,889.21/358.96
  6. Step 6: Final answer
    x = 487.21

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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.