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Finding the Fourth Proportional to 339.56, 468.55 and 192.16

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Solution

The fourth proportional to 339.56, 468.55 and 192.16 is: 265.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.56 : 468.55 = 192.16 : x
  2. Step 2: Convert to fraction form
    339.56/468.55 = 192.16/x
  3. Step 3: Cross multiply
    339.56x = 468.55 × 192.16
  4. Step 4: Simplify right side
    339.56x = 90,036.57
  5. Step 5: Solve for x
    x = 90,036.57/339.56
  6. Step 6: Final answer
    x = 265.16

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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.