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Finding the Fourth Proportional to 395.58, 545.83 and 277.92

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Solution

The fourth proportional to 395.58, 545.83 and 277.92 is: 383.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.58 : 545.83 = 277.92 : x
  2. Step 2: Convert to fraction form
    395.58/545.83 = 277.92/x
  3. Step 3: Cross multiply
    395.58x = 545.83 × 277.92
  4. Step 4: Simplify right side
    395.58x = 151,694.34
  5. Step 5: Solve for x
    x = 151,694.34/395.58
  6. Step 6: Final answer
    x = 383.47

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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.