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Finding the Fourth Proportional to 302.24, 450.80 and 282.64

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Solution

The fourth proportional to 302.24, 450.80 and 282.64 is: 421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.24 : 450.80 = 282.64 : x
  2. Step 2: Convert to fraction form
    302.24/450.80 = 282.64/x
  3. Step 3: Cross multiply
    302.24x = 450.80 × 282.64
  4. Step 4: Simplify right side
    302.24x = 127,414.11
  5. Step 5: Solve for x
    x = 127,414.11/302.24
  6. Step 6: Final answer
    x = 421.57

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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.