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Finding the Fourth Proportional to 151.02, 208.49 and 92.84

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Solution

The fourth proportional to 151.02, 208.49 and 92.84 is: 128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.02 : 208.49 = 92.84 : x
  2. Step 2: Convert to fraction form
    151.02/208.49 = 92.84/x
  3. Step 3: Cross multiply
    151.02x = 208.49 × 92.84
  4. Step 4: Simplify right side
    151.02x = 19,354.70
  5. Step 5: Solve for x
    x = 19,354.70/151.02
  6. Step 6: Final answer
    x = 128.16

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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.