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Finding the Fourth Proportional to 1,060.64, 1,591.02 and 330.24

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Solution

The fourth proportional to 1,060.64, 1,591.02 and 330.24 is: 495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.64 : 1,591.02 = 330.24 : x
  2. Step 2: Convert to fraction form
    1,060.64/1,591.02 = 330.24/x
  3. Step 3: Cross multiply
    1,060.64x = 1,591.02 × 330.24
  4. Step 4: Simplify right side
    1,060.64x = 525,418.44
  5. Step 5: Solve for x
    x = 525,418.44/1,060.64
  6. Step 6: Final answer
    x = 495.38

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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.