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Finding the Fourth Proportional to 274.95, 379.58 and 228.32

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Solution

The fourth proportional to 274.95, 379.58 and 228.32 is: 315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.95 : 379.58 = 228.32 : x
  2. Step 2: Convert to fraction form
    274.95/379.58 = 228.32/x
  3. Step 3: Cross multiply
    274.95x = 379.58 × 228.32
  4. Step 4: Simplify right side
    274.95x = 86,665.71
  5. Step 5: Solve for x
    x = 86,665.71/274.95
  6. Step 6: Final answer
    x = 315.21

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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.