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Finding the Fourth Proportional to 326.55, 450.65 and 202.22

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Solution

The fourth proportional to 326.55, 450.65 and 202.22 is: 279.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.55 : 450.65 = 202.22 : x
  2. Step 2: Convert to fraction form
    326.55/450.65 = 202.22/x
  3. Step 3: Cross multiply
    326.55x = 450.65 × 202.22
  4. Step 4: Simplify right side
    326.55x = 91,127.18
  5. Step 5: Solve for x
    x = 91,127.18/326.55
  6. Step 6: Final answer
    x = 279.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.