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Finding the Fourth Proportional to 1,200.26, 1,800.38 and 469.32

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Solution

The fourth proportional to 1,200.26, 1,800.38 and 469.32 is: 703.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.26 : 1,800.38 = 469.32 : x
  2. Step 2: Convert to fraction form
    1,200.26/1,800.38 = 469.32/x
  3. Step 3: Cross multiply
    1,200.26x = 1,800.38 × 469.32
  4. Step 4: Simplify right side
    1,200.26x = 844,956.10
  5. Step 5: Solve for x
    x = 844,956.10/1,200.26
  6. Step 6: Final answer
    x = 703.98

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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.