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Finding the Fourth Proportional to 302.83, 453.40 and 220.66

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Solution

The fourth proportional to 302.83, 453.40 and 220.66 is: 330.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.83 : 453.40 = 220.66 : x
  2. Step 2: Convert to fraction form
    302.83/453.40 = 220.66/x
  3. Step 3: Cross multiply
    302.83x = 453.40 × 220.66
  4. Step 4: Simplify right side
    302.83x = 100,045.56
  5. Step 5: Solve for x
    x = 100,045.56/302.83
  6. Step 6: Final answer
    x = 330.37

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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.