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Finding the Fourth Proportional to 623, 859.32 and 374.12

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Solution

The fourth proportional to 623, 859.32 and 374.12 is: 516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    623 : 859.32 = 374.12 : x
  2. Step 2: Convert to fraction form
    623/859.32 = 374.12/x
  3. Step 3: Cross multiply
    623x = 859.32 × 374.12
  4. Step 4: Simplify right side
    623x = 321,488.80
  5. Step 5: Solve for x
    x = 321,488.80/623
  6. Step 6: Final answer
    x = 516.03

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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.