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Finding the Fourth Proportional to 254.18, 350.64 and 165.68

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Solution

The fourth proportional to 254.18, 350.64 and 165.68 is: 228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.18 : 350.64 = 165.68 : x
  2. Step 2: Convert to fraction form
    254.18/350.64 = 165.68/x
  3. Step 3: Cross multiply
    254.18x = 350.64 × 165.68
  4. Step 4: Simplify right side
    254.18x = 58,094.04
  5. Step 5: Solve for x
    x = 58,094.04/254.18
  6. Step 6: Final answer
    x = 228.55

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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.