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Finding the Fourth Proportional to 231.93, 347.81 and 95.00

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Solution

The fourth proportional to 231.93, 347.81 and 95.00 is: 142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.93 : 347.81 = 95.00 : x
  2. Step 2: Convert to fraction form
    231.93/347.81 = 95.00/x
  3. Step 3: Cross multiply
    231.93x = 347.81 × 95.00
  4. Step 4: Simplify right side
    231.93x = 33,039.74
  5. Step 5: Solve for x
    x = 33,039.74/231.93
  6. Step 6: Final answer
    x = 142.46

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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.