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Finding the Fourth Proportional to 1,200.94, 1,800.66 and 469.66

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Solution

The fourth proportional to 1,200.94, 1,800.66 and 469.66 is: 704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.94 : 1,800.66 = 469.66 : x
  2. Step 2: Convert to fraction form
    1,200.94/1,800.66 = 469.66/x
  3. Step 3: Cross multiply
    1,200.94x = 1,800.66 × 469.66
  4. Step 4: Simplify right side
    1,200.94x = 845,697.98
  5. Step 5: Solve for x
    x = 845,697.98/1,200.94
  6. Step 6: Final answer
    x = 704.20

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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.