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Finding the Fourth Proportional to 395.88, 545.58 and 333.72

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Solution

The fourth proportional to 395.88, 545.58 and 333.72 is: 459.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.88 : 545.58 = 333.72 : x
  2. Step 2: Convert to fraction form
    395.88/545.58 = 333.72/x
  3. Step 3: Cross multiply
    395.88x = 545.58 × 333.72
  4. Step 4: Simplify right side
    395.88x = 182,070.96
  5. Step 5: Solve for x
    x = 182,070.96/395.88
  6. Step 6: Final answer
    x = 459.91

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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.