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Finding the Fourth Proportional to 299.20, 437.60 and 299.20

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Solution

The fourth proportional to 299.20, 437.60 and 299.20 is: 437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.20 : 437.60 = 299.20 : x
  2. Step 2: Convert to fraction form
    299.20/437.60 = 299.20/x
  3. Step 3: Cross multiply
    299.20x = 437.60 × 299.20
  4. Step 4: Simplify right side
    299.20x = 130,929.92
  5. Step 5: Solve for x
    x = 130,929.92/299.20
  6. Step 6: Final answer
    x = 437.60

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.