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Finding the Fourth Proportional to 315.62, 435.43 and 191.24

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Solution

The fourth proportional to 315.62, 435.43 and 191.24 is: 263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.62 : 435.43 = 191.24 : x
  2. Step 2: Convert to fraction form
    315.62/435.43 = 191.24/x
  3. Step 3: Cross multiply
    315.62x = 435.43 × 191.24
  4. Step 4: Simplify right side
    315.62x = 83,269.03
  5. Step 5: Solve for x
    x = 83,269.03/315.62
  6. Step 6: Final answer
    x = 263.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.