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Finding the Fourth Proportional to 625.94, 939.05 and 193.08

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Solution

The fourth proportional to 625.94, 939.05 and 193.08 is: 289.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.94 : 939.05 = 193.08 : x
  2. Step 2: Convert to fraction form
    625.94/939.05 = 193.08/x
  3. Step 3: Cross multiply
    625.94x = 939.05 × 193.08
  4. Step 4: Simplify right side
    625.94x = 181,310.81
  5. Step 5: Solve for x
    x = 181,310.81/625.94
  6. Step 6: Final answer
    x = 289.66

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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.