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Finding the Fourth Proportional to 462.30, 692.28 and 299.76

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Solution

The fourth proportional to 462.30, 692.28 and 299.76 is: 448.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.30 : 692.28 = 299.76 : x
  2. Step 2: Convert to fraction form
    462.30/692.28 = 299.76/x
  3. Step 3: Cross multiply
    462.30x = 692.28 × 299.76
  4. Step 4: Simplify right side
    462.30x = 207,517.85
  5. Step 5: Solve for x
    x = 207,517.85/462.30
  6. Step 6: Final answer
    x = 448.88

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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.