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Finding the Fourth Proportional to 292.74, 404.18 and 187.87

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Solution

The fourth proportional to 292.74, 404.18 and 187.87 is: 259.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.74 : 404.18 = 187.87 : x
  2. Step 2: Convert to fraction form
    292.74/404.18 = 187.87/x
  3. Step 3: Cross multiply
    292.74x = 404.18 × 187.87
  4. Step 4: Simplify right side
    292.74x = 75,932.36
  5. Step 5: Solve for x
    x = 75,932.36/292.74
  6. Step 6: Final answer
    x = 259.38

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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.