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Finding the Fourth Proportional to 365.61, 545.59 and 326.67

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Solution

The fourth proportional to 365.61, 545.59 and 326.67 is: 487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.61 : 545.59 = 326.67 : x
  2. Step 2: Convert to fraction form
    365.61/545.59 = 326.67/x
  3. Step 3: Cross multiply
    365.61x = 545.59 × 326.67
  4. Step 4: Simplify right side
    365.61x = 178,229.32
  5. Step 5: Solve for x
    x = 178,229.32/365.61
  6. Step 6: Final answer
    x = 487.48

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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.