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Finding the Fourth Proportional to 1,083.30, 1,625.05 and 433.90

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Solution

The fourth proportional to 1,083.30, 1,625.05 and 433.90 is: 650.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.30 : 1,625.05 = 433.90 : x
  2. Step 2: Convert to fraction form
    1,083.30/1,625.05 = 433.90/x
  3. Step 3: Cross multiply
    1,083.30x = 1,625.05 × 433.90
  4. Step 4: Simplify right side
    1,083.30x = 705,109.20
  5. Step 5: Solve for x
    x = 705,109.20/1,083.30
  6. Step 6: Final answer
    x = 650.89

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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.