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Finding the Fourth Proportional to 165.74, 228.70 and 92.06

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Solution

The fourth proportional to 165.74, 228.70 and 92.06 is: 127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.74 : 228.70 = 92.06 : x
  2. Step 2: Convert to fraction form
    165.74/228.70 = 92.06/x
  3. Step 3: Cross multiply
    165.74x = 228.70 × 92.06
  4. Step 4: Simplify right side
    165.74x = 21,054.12
  5. Step 5: Solve for x
    x = 21,054.12/165.74
  6. Step 6: Final answer
    x = 127.03

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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.