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Finding the Fourth Proportional to 503.62, 755.70 and 191.48

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Solution

The fourth proportional to 503.62, 755.70 and 191.48 is: 287.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.62 : 755.70 = 191.48 : x
  2. Step 2: Convert to fraction form
    503.62/755.70 = 191.48/x
  3. Step 3: Cross multiply
    503.62x = 755.70 × 191.48
  4. Step 4: Simplify right side
    503.62x = 144,701.44
  5. Step 5: Solve for x
    x = 144,701.44/503.62
  6. Step 6: Final answer
    x = 287.32

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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.