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Finding the Fourth Proportional to 1,083.50, 1,625.16 and 535.50

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Solution

The fourth proportional to 1,083.50, 1,625.16 and 535.50 is: 803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.50 : 1,625.16 = 535.50 : x
  2. Step 2: Convert to fraction form
    1,083.50/1,625.16 = 535.50/x
  3. Step 3: Cross multiply
    1,083.50x = 1,625.16 × 535.50
  4. Step 4: Simplify right side
    1,083.50x = 870,273.18
  5. Step 5: Solve for x
    x = 870,273.18/1,083.50
  6. Step 6: Final answer
    x = 803.21

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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.