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Finding the Fourth Proportional to 248.70, 374.50 and 228.54

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Solution

The fourth proportional to 248.70, 374.50 and 228.54 is: 344.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.70 : 374.50 = 228.54 : x
  2. Step 2: Convert to fraction form
    248.70/374.50 = 228.54/x
  3. Step 3: Cross multiply
    248.70x = 374.50 × 228.54
  4. Step 4: Simplify right side
    248.70x = 85,588.23
  5. Step 5: Solve for x
    x = 85,588.23/248.70
  6. Step 6: Final answer
    x = 344.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.