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Finding the Fourth Proportional to 1,083.62, 1,625.16 and 535.28

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Solution

The fourth proportional to 1,083.62, 1,625.16 and 535.28 is: 802.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.62 : 1,625.16 = 535.28 : x
  2. Step 2: Convert to fraction form
    1,083.62/1,625.16 = 535.28/x
  3. Step 3: Cross multiply
    1,083.62x = 1,625.16 × 535.28
  4. Step 4: Simplify right side
    1,083.62x = 869,915.64
  5. Step 5: Solve for x
    x = 869,915.64/1,083.62
  6. Step 6: Final answer
    x = 802.79

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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.