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Finding the Fourth Proportional to 395.37, 545.22 and 264.42

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Solution

The fourth proportional to 395.37, 545.22 and 264.42 is: 364.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.37 : 545.22 = 264.42 : x
  2. Step 2: Convert to fraction form
    395.37/545.22 = 264.42/x
  3. Step 3: Cross multiply
    395.37x = 545.22 × 264.42
  4. Step 4: Simplify right side
    395.37x = 144,167.07
  5. Step 5: Solve for x
    x = 144,167.07/395.37
  6. Step 6: Final answer
    x = 364.64

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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.