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Finding the Fourth Proportional to 625.23, 858.39 and 609.15

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Solution

The fourth proportional to 625.23, 858.39 and 609.15 is: 836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.23 : 858.39 = 609.15 : x
  2. Step 2: Convert to fraction form
    625.23/858.39 = 609.15/x
  3. Step 3: Cross multiply
    625.23x = 858.39 × 609.15
  4. Step 4: Simplify right side
    625.23x = 522,888.27
  5. Step 5: Solve for x
    x = 522,888.27/625.23
  6. Step 6: Final answer
    x = 836.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.