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Finding the Fourth Proportional to 231.19, 346.48 and 192.92

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Solution

The fourth proportional to 231.19, 346.48 and 192.92 is: 289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.19 : 346.48 = 192.92 : x
  2. Step 2: Convert to fraction form
    231.19/346.48 = 192.92/x
  3. Step 3: Cross multiply
    231.19x = 346.48 × 192.92
  4. Step 4: Simplify right side
    231.19x = 66,840.71
  5. Step 5: Solve for x
    x = 66,840.71/231.19
  6. Step 6: Final answer
    x = 289.12

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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.