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Finding the Fourth Proportional to 257.93, 355.97 and 141.50

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Solution

The fourth proportional to 257.93, 355.97 and 141.50 is: 195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.93 : 355.97 = 141.50 : x
  2. Step 2: Convert to fraction form
    257.93/355.97 = 141.50/x
  3. Step 3: Cross multiply
    257.93x = 355.97 × 141.50
  4. Step 4: Simplify right side
    257.93x = 50,369.76
  5. Step 5: Solve for x
    x = 50,369.76/257.93
  6. Step 6: Final answer
    x = 195.28

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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.