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Finding the Fourth Proportional to 623.14, 860.09 and 374.47

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Solution

The fourth proportional to 623.14, 860.09 and 374.47 is: 516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.14 : 860.09 = 374.47 : x
  2. Step 2: Convert to fraction form
    623.14/860.09 = 374.47/x
  3. Step 3: Cross multiply
    623.14x = 860.09 × 374.47
  4. Step 4: Simplify right side
    623.14x = 322,076.69
  5. Step 5: Solve for x
    x = 322,076.69/623.14
  6. Step 6: Final answer
    x = 516.86

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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.