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Finding the Fourth Proportional to 248.96, 374.76 and 191.49

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Solution

The fourth proportional to 248.96, 374.76 and 191.49 is: 288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.96 : 374.76 = 191.49 : x
  2. Step 2: Convert to fraction form
    248.96/374.76 = 191.49/x
  3. Step 3: Cross multiply
    248.96x = 374.76 × 191.49
  4. Step 4: Simplify right side
    248.96x = 71,762.79
  5. Step 5: Solve for x
    x = 71,762.79/248.96
  6. Step 6: Final answer
    x = 288.26

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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.