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Finding the Fourth Proportional to 237.78, 355.06 and 194.53

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Solution

The fourth proportional to 237.78, 355.06 and 194.53 is: 290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.78 : 355.06 = 194.53 : x
  2. Step 2: Convert to fraction form
    237.78/355.06 = 194.53/x
  3. Step 3: Cross multiply
    237.78x = 355.06 × 194.53
  4. Step 4: Simplify right side
    237.78x = 69,069.82
  5. Step 5: Solve for x
    x = 69,069.82/237.78
  6. Step 6: Final answer
    x = 290.48

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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.