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Finding the Fourth Proportional to 1,330.36, 1,995.30 and 356.44

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Solution

The fourth proportional to 1,330.36, 1,995.30 and 356.44 is: 534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.36 : 1,995.30 = 356.44 : x
  2. Step 2: Convert to fraction form
    1,330.36/1,995.30 = 356.44/x
  3. Step 3: Cross multiply
    1,330.36x = 1,995.30 × 356.44
  4. Step 4: Simplify right side
    1,330.36x = 711,204.73
  5. Step 5: Solve for x
    x = 711,204.73/1,330.36
  6. Step 6: Final answer
    x = 534.60

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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.