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Finding the Fourth Proportional to 1,083.28, 1,624.61 and 352.92

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Solution

The fourth proportional to 1,083.28, 1,624.61 and 352.92 is: 529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.28 : 1,624.61 = 352.92 : x
  2. Step 2: Convert to fraction form
    1,083.28/1,624.61 = 352.92/x
  3. Step 3: Cross multiply
    1,083.28x = 1,624.61 × 352.92
  4. Step 4: Simplify right side
    1,083.28x = 573,357.36
  5. Step 5: Solve for x
    x = 573,357.36/1,083.28
  6. Step 6: Final answer
    x = 529.28

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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.