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Finding the Fourth Proportional to 202.91, 302.74 and 192.17

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Solution

The fourth proportional to 202.91, 302.74 and 192.17 is: 286.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.91 : 302.74 = 192.17 : x
  2. Step 2: Convert to fraction form
    202.91/302.74 = 192.17/x
  3. Step 3: Cross multiply
    202.91x = 302.74 × 192.17
  4. Step 4: Simplify right side
    202.91x = 58,177.82
  5. Step 5: Solve for x
    x = 58,177.82/202.91
  6. Step 6: Final answer
    x = 286.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.