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Finding the Fourth Proportional to 501.18, 691.50 and 326.49

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Solution

The fourth proportional to 501.18, 691.50 and 326.49 is: 450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.18 : 691.50 = 326.49 : x
  2. Step 2: Convert to fraction form
    501.18/691.50 = 326.49/x
  3. Step 3: Cross multiply
    501.18x = 691.50 × 326.49
  4. Step 4: Simplify right side
    501.18x = 225,767.84
  5. Step 5: Solve for x
    x = 225,767.84/501.18
  6. Step 6: Final answer
    x = 450.47

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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.