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Finding the Fourth Proportional to 196.48, 293.28 and 192.64

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Solution

The fourth proportional to 196.48, 293.28 and 192.64 is: 287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.48 : 293.28 = 192.64 : x
  2. Step 2: Convert to fraction form
    196.48/293.28 = 192.64/x
  3. Step 3: Cross multiply
    196.48x = 293.28 × 192.64
  4. Step 4: Simplify right side
    196.48x = 56,497.46
  5. Step 5: Solve for x
    x = 56,497.46/196.48
  6. Step 6: Final answer
    x = 287.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.