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Finding the Fourth Proportional to 192.10, 264.81 and 153.22

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Solution

The fourth proportional to 192.10, 264.81 and 153.22 is: 211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.10 : 264.81 = 153.22 : x
  2. Step 2: Convert to fraction form
    192.10/264.81 = 153.22/x
  3. Step 3: Cross multiply
    192.10x = 264.81 × 153.22
  4. Step 4: Simplify right side
    192.10x = 40,574.19
  5. Step 5: Solve for x
    x = 40,574.19/192.10
  6. Step 6: Final answer
    x = 211.21

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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.