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Finding the Fourth Proportional to 295.68, 407.86 and 197.28

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Solution

The fourth proportional to 295.68, 407.86 and 197.28 is: 272.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.68 : 407.86 = 197.28 : x
  2. Step 2: Convert to fraction form
    295.68/407.86 = 197.28/x
  3. Step 3: Cross multiply
    295.68x = 407.86 × 197.28
  4. Step 4: Simplify right side
    295.68x = 80,462.62
  5. Step 5: Solve for x
    x = 80,462.62/295.68
  6. Step 6: Final answer
    x = 272.13

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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.