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Finding the Fourth Proportional to 326.45, 486.53 and 325.94

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Solution

The fourth proportional to 326.45, 486.53 and 325.94 is: 485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.45 : 486.53 = 325.94 : x
  2. Step 2: Convert to fraction form
    326.45/486.53 = 325.94/x
  3. Step 3: Cross multiply
    326.45x = 486.53 × 325.94
  4. Step 4: Simplify right side
    326.45x = 158,575.53
  5. Step 5: Solve for x
    x = 158,575.53/326.45
  6. Step 6: Final answer
    x = 485.76

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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.