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Finding the Fourth Proportional to 628, 941.36 and 263

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Solution

The fourth proportional to 628, 941.36 and 263 is: 394.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    628 : 941.36 = 263 : x
  2. Step 2: Convert to fraction form
    628/941.36 = 263/x
  3. Step 3: Cross multiply
    628x = 941.36 × 263
  4. Step 4: Simplify right side
    628x = 247,577.68
  5. Step 5: Solve for x
    x = 247,577.68/628
  6. Step 6: Final answer
    x = 394.23

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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.