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Finding the Fourth Proportional to 625.09, 937.64 and 259.88

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Solution

The fourth proportional to 625.09, 937.64 and 259.88 is: 389.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.09 : 937.64 = 259.88 : x
  2. Step 2: Convert to fraction form
    625.09/937.64 = 259.88/x
  3. Step 3: Cross multiply
    625.09x = 937.64 × 259.88
  4. Step 4: Simplify right side
    625.09x = 243,668.38
  5. Step 5: Solve for x
    x = 243,668.38/625.09
  6. Step 6: Final answer
    x = 389.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.