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Finding the Fourth Proportional to 1,168.88, 1,753.62 and 438.50

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Solution

The fourth proportional to 1,168.88, 1,753.62 and 438.50 is: 657.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.88 : 1,753.62 = 438.50 : x
  2. Step 2: Convert to fraction form
    1,168.88/1,753.62 = 438.50/x
  3. Step 3: Cross multiply
    1,168.88x = 1,753.62 × 438.50
  4. Step 4: Simplify right side
    1,168.88x = 768,962.37
  5. Step 5: Solve for x
    x = 768,962.37/1,168.88
  6. Step 6: Final answer
    x = 657.86

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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.