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Finding the Fourth Proportional to 192.40, 264.88 and 153.52

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Solution

The fourth proportional to 192.40, 264.88 and 153.52 is: 211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.40 : 264.88 = 153.52 : x
  2. Step 2: Convert to fraction form
    192.40/264.88 = 153.52/x
  3. Step 3: Cross multiply
    192.40x = 264.88 × 153.52
  4. Step 4: Simplify right side
    192.40x = 40,664.38
  5. Step 5: Solve for x
    x = 40,664.38/192.40
  6. Step 6: Final answer
    x = 211.35

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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.