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Finding the Fourth Proportional to 395.46, 545.23 and 325.26

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Solution

The fourth proportional to 395.46, 545.23 and 325.26 is: 448.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.46 : 545.23 = 325.26 : x
  2. Step 2: Convert to fraction form
    395.46/545.23 = 325.26/x
  3. Step 3: Cross multiply
    395.46x = 545.23 × 325.26
  4. Step 4: Simplify right side
    395.46x = 177,341.51
  5. Step 5: Solve for x
    x = 177,341.51/395.46
  6. Step 6: Final answer
    x = 448.44

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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.