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Finding the Fourth Proportional to 1,073.70, 1,610.58 and 343.28

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Solution

The fourth proportional to 1,073.70, 1,610.58 and 343.28 is: 514.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.70 : 1,610.58 = 343.28 : x
  2. Step 2: Convert to fraction form
    1,073.70/1,610.58 = 343.28/x
  3. Step 3: Cross multiply
    1,073.70x = 1,610.58 × 343.28
  4. Step 4: Simplify right side
    1,073.70x = 552,879.90
  5. Step 5: Solve for x
    x = 552,879.90/1,073.70
  6. Step 6: Final answer
    x = 514.93

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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.