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Finding the Fourth Proportional to 295.51, 443.28 and 133.21

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Solution

The fourth proportional to 295.51, 443.28 and 133.21 is: 199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.51 : 443.28 = 133.21 : x
  2. Step 2: Convert to fraction form
    295.51/443.28 = 133.21/x
  3. Step 3: Cross multiply
    295.51x = 443.28 × 133.21
  4. Step 4: Simplify right side
    295.51x = 59,047.11
  5. Step 5: Solve for x
    x = 59,047.11/295.51
  6. Step 6: Final answer
    x = 199.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.