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Finding the Fourth Proportional to 277.22, 382.15 and 228.02

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Solution

The fourth proportional to 277.22, 382.15 and 228.02 is: 314.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.22 : 382.15 = 228.02 : x
  2. Step 2: Convert to fraction form
    277.22/382.15 = 228.02/x
  3. Step 3: Cross multiply
    277.22x = 382.15 × 228.02
  4. Step 4: Simplify right side
    277.22x = 87,135.36
  5. Step 5: Solve for x
    x = 87,135.36/277.22
  6. Step 6: Final answer
    x = 314.32

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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.