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Finding the Fourth Proportional to 374.40, 516.16 and 263.84

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Solution

The fourth proportional to 374.40, 516.16 and 263.84 is: 363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.40 : 516.16 = 263.84 : x
  2. Step 2: Convert to fraction form
    374.40/516.16 = 263.84/x
  3. Step 3: Cross multiply
    374.40x = 516.16 × 263.84
  4. Step 4: Simplify right side
    374.40x = 136,183.65
  5. Step 5: Solve for x
    x = 136,183.65/374.40
  6. Step 6: Final answer
    x = 363.74

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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.