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Finding the Fourth Proportional to 165.03, 248.79 and 154.59

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Solution

The fourth proportional to 165.03, 248.79 and 154.59 is: 233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.03 : 248.79 = 154.59 : x
  2. Step 2: Convert to fraction form
    165.03/248.79 = 154.59/x
  3. Step 3: Cross multiply
    165.03x = 248.79 × 154.59
  4. Step 4: Simplify right side
    165.03x = 38,460.45
  5. Step 5: Solve for x
    x = 38,460.45/165.03
  6. Step 6: Final answer
    x = 233.05

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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.