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Finding the Fourth Proportional to 1,083.98, 1,625.85 and 353.67

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Solution

The fourth proportional to 1,083.98, 1,625.85 and 353.67 is: 530.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.98 : 1,625.85 = 353.67 : x
  2. Step 2: Convert to fraction form
    1,083.98/1,625.85 = 353.67/x
  3. Step 3: Cross multiply
    1,083.98x = 1,625.85 × 353.67
  4. Step 4: Simplify right side
    1,083.98x = 575,014.37
  5. Step 5: Solve for x
    x = 575,014.37/1,083.98
  6. Step 6: Final answer
    x = 530.47

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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.