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Finding the Fourth Proportional to 295.47, 407.65 and 197.12

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Solution

The fourth proportional to 295.47, 407.65 and 197.12 is: 271.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.47 : 407.65 = 197.12 : x
  2. Step 2: Convert to fraction form
    295.47/407.65 = 197.12/x
  3. Step 3: Cross multiply
    295.47x = 407.65 × 197.12
  4. Step 4: Simplify right side
    295.47x = 80,355.97
  5. Step 5: Solve for x
    x = 80,355.97/295.47
  6. Step 6: Final answer
    x = 271.96

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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.