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Finding the Fourth Proportional to 302.93, 453.84 and 140.73

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Solution

The fourth proportional to 302.93, 453.84 and 140.73 is: 210.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.93 : 453.84 = 140.73 : x
  2. Step 2: Convert to fraction form
    302.93/453.84 = 140.73/x
  3. Step 3: Cross multiply
    302.93x = 453.84 × 140.73
  4. Step 4: Simplify right side
    302.93x = 63,868.90
  5. Step 5: Solve for x
    x = 63,868.90/302.93
  6. Step 6: Final answer
    x = 210.84

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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.