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Finding the Fourth Proportional to 2,402.24, 3,603.39 and 842.18

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Solution

The fourth proportional to 2,402.24, 3,603.39 and 842.18 is: 1,263.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,402.24 : 3,603.39 = 842.18 : x
  2. Step 2: Convert to fraction form
    2,402.24/3,603.39 = 842.18/x
  3. Step 3: Cross multiply
    2,402.24x = 3,603.39 × 842.18
  4. Step 4: Simplify right side
    2,402.24x = 3,034,702.99
  5. Step 5: Solve for x
    x = 3,034,702.99/2,402.24
  6. Step 6: Final answer
    x = 1,263.28

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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.