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Finding the Fourth Proportional to 192.56, 265.48 and 157.46

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Solution

The fourth proportional to 192.56, 265.48 and 157.46 is: 217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.56 : 265.48 = 157.46 : x
  2. Step 2: Convert to fraction form
    192.56/265.48 = 157.46/x
  3. Step 3: Cross multiply
    192.56x = 265.48 × 157.46
  4. Step 4: Simplify right side
    192.56x = 41,800.76
  5. Step 5: Solve for x
    x = 41,800.76/192.56
  6. Step 6: Final answer
    x = 217.08

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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.