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Finding the Fourth Proportional to 245.91, 366.80 and 228.90

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Solution

The fourth proportional to 245.91, 366.80 and 228.90 is: 341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.91 : 366.80 = 228.90 : x
  2. Step 2: Convert to fraction form
    245.91/366.80 = 228.90/x
  3. Step 3: Cross multiply
    245.91x = 366.80 × 228.90
  4. Step 4: Simplify right side
    245.91x = 83,960.86
  5. Step 5: Solve for x
    x = 83,960.86/245.91
  6. Step 6: Final answer
    x = 341.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.