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Finding the Fourth Proportional to 434.27, 650.25 and 279.35

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Solution

The fourth proportional to 434.27, 650.25 and 279.35 is: 418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.27 : 650.25 = 279.35 : x
  2. Step 2: Convert to fraction form
    434.27/650.25 = 279.35/x
  3. Step 3: Cross multiply
    434.27x = 650.25 × 279.35
  4. Step 4: Simplify right side
    434.27x = 181,647.34
  5. Step 5: Solve for x
    x = 181,647.34/434.27
  6. Step 6: Final answer
    x = 418.28

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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.