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Finding the Fourth Proportional to 1,168.83, 1,753.17 and 438.35

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Solution

The fourth proportional to 1,168.83, 1,753.17 and 438.35 is: 657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.83 : 1,753.17 = 438.35 : x
  2. Step 2: Convert to fraction form
    1,168.83/1,753.17 = 438.35/x
  3. Step 3: Cross multiply
    1,168.83x = 1,753.17 × 438.35
  4. Step 4: Simplify right side
    1,168.83x = 768,493.30
  5. Step 5: Solve for x
    x = 768,493.30/1,168.83
  6. Step 6: Final answer
    x = 657.49

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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.