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Finding the Fourth Proportional to 625.93, 939.12 and 279.51

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Solution

The fourth proportional to 625.93, 939.12 and 279.51 is: 419.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.93 : 939.12 = 279.51 : x
  2. Step 2: Convert to fraction form
    625.93/939.12 = 279.51/x
  3. Step 3: Cross multiply
    625.93x = 939.12 × 279.51
  4. Step 4: Simplify right side
    625.93x = 262,492.03
  5. Step 5: Solve for x
    x = 262,492.03/625.93
  6. Step 6: Final answer
    x = 419.36

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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.