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Finding the Fourth Proportional to 1,442.73, 2,163.73 and 469.11

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Solution

The fourth proportional to 1,442.73, 2,163.73 and 469.11 is: 703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.73 : 2,163.73 = 469.11 : x
  2. Step 2: Convert to fraction form
    1,442.73/2,163.73 = 469.11/x
  3. Step 3: Cross multiply
    1,442.73x = 2,163.73 × 469.11
  4. Step 4: Simplify right side
    1,442.73x = 1,015,027.38
  5. Step 5: Solve for x
    x = 1,015,027.38/1,442.73
  6. Step 6: Final answer
    x = 703.55

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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.