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Finding the Fourth Proportional to 302.40, 450.18 and 300.60

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Solution

The fourth proportional to 302.40, 450.18 and 300.60 is: 447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.40 : 450.18 = 300.60 : x
  2. Step 2: Convert to fraction form
    302.40/450.18 = 300.60/x
  3. Step 3: Cross multiply
    302.40x = 450.18 × 300.60
  4. Step 4: Simplify right side
    302.40x = 135,324.11
  5. Step 5: Solve for x
    x = 135,324.11/302.40
  6. Step 6: Final answer
    x = 447.50

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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.