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Finding the Fourth Proportional to 302.51, 453.94 and 129.16

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Solution

The fourth proportional to 302.51, 453.94 and 129.16 is: 193.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.51 : 453.94 = 129.16 : x
  2. Step 2: Convert to fraction form
    302.51/453.94 = 129.16/x
  3. Step 3: Cross multiply
    302.51x = 453.94 × 129.16
  4. Step 4: Simplify right side
    302.51x = 58,629.11
  5. Step 5: Solve for x
    x = 58,629.11/302.51
  6. Step 6: Final answer
    x = 193.81

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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.