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Finding the Fourth Proportional to 315.67, 435.64 and 182.91

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Solution

The fourth proportional to 315.67, 435.64 and 182.91 is: 252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.67 : 435.64 = 182.91 : x
  2. Step 2: Convert to fraction form
    315.67/435.64 = 182.91/x
  3. Step 3: Cross multiply
    315.67x = 435.64 × 182.91
  4. Step 4: Simplify right side
    315.67x = 79,682.91
  5. Step 5: Solve for x
    x = 79,682.91/315.67
  6. Step 6: Final answer
    x = 252.42

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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.