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Finding the Fourth Proportional to 395.39, 545.55 and 264.77

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Solution

The fourth proportional to 395.39, 545.55 and 264.77 is: 365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.39 : 545.55 = 264.77 : x
  2. Step 2: Convert to fraction form
    395.39/545.55 = 264.77/x
  3. Step 3: Cross multiply
    395.39x = 545.55 × 264.77
  4. Step 4: Simplify right side
    395.39x = 144,445.64
  5. Step 5: Solve for x
    x = 144,445.64/395.39
  6. Step 6: Final answer
    x = 365.33

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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.