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Finding the Fourth Proportional to 254.48, 383.65 and 236.86

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Solution

The fourth proportional to 254.48, 383.65 and 236.86 is: 357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.48 : 383.65 = 236.86 : x
  2. Step 2: Convert to fraction form
    254.48/383.65 = 236.86/x
  3. Step 3: Cross multiply
    254.48x = 383.65 × 236.86
  4. Step 4: Simplify right side
    254.48x = 90,869.79
  5. Step 5: Solve for x
    x = 90,869.79/254.48
  6. Step 6: Final answer
    x = 357.09

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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.