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Finding the Fourth Proportional to 284.51, 426.62 and 92.09

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Solution

The fourth proportional to 284.51, 426.62 and 92.09 is: 138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.51 : 426.62 = 92.09 : x
  2. Step 2: Convert to fraction form
    284.51/426.62 = 92.09/x
  3. Step 3: Cross multiply
    284.51x = 426.62 × 92.09
  4. Step 4: Simplify right side
    284.51x = 39,285.53
  5. Step 5: Solve for x
    x = 39,285.53/284.51
  6. Step 6: Final answer
    x = 138.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.