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Finding the Fourth Proportional to 365.08, 545.34 and 273.28

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Solution

The fourth proportional to 365.08, 545.34 and 273.28 is: 408.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.08 : 545.34 = 273.28 : x
  2. Step 2: Convert to fraction form
    365.08/545.34 = 273.28/x
  3. Step 3: Cross multiply
    365.08x = 545.34 × 273.28
  4. Step 4: Simplify right side
    365.08x = 149,030.52
  5. Step 5: Solve for x
    x = 149,030.52/365.08
  6. Step 6: Final answer
    x = 408.21

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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.