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Finding the Fourth Proportional to 1,329.45, 1,995.20 and 599.64

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Solution

The fourth proportional to 1,329.45, 1,995.20 and 599.64 is: 899.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.45 : 1,995.20 = 599.64 : x
  2. Step 2: Convert to fraction form
    1,329.45/1,995.20 = 599.64/x
  3. Step 3: Cross multiply
    1,329.45x = 1,995.20 × 599.64
  4. Step 4: Simplify right side
    1,329.45x = 1,196,398.73
  5. Step 5: Solve for x
    x = 1,196,398.73/1,329.45
  6. Step 6: Final answer
    x = 899.92

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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.