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Finding the Fourth Proportional to 302.61, 451.31 and 273.45

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Solution

The fourth proportional to 302.61, 451.31 and 273.45 is: 407.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.61 : 451.31 = 273.45 : x
  2. Step 2: Convert to fraction form
    302.61/451.31 = 273.45/x
  3. Step 3: Cross multiply
    302.61x = 451.31 × 273.45
  4. Step 4: Simplify right side
    302.61x = 123,410.72
  5. Step 5: Solve for x
    x = 123,410.72/302.61
  6. Step 6: Final answer
    x = 407.82

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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.