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Finding the Fourth Proportional to 474.63, 712.12 and 186.09

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Solution

The fourth proportional to 474.63, 712.12 and 186.09 is: 279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.63 : 712.12 = 186.09 : x
  2. Step 2: Convert to fraction form
    474.63/712.12 = 186.09/x
  3. Step 3: Cross multiply
    474.63x = 712.12 × 186.09
  4. Step 4: Simplify right side
    474.63x = 132,518.41
  5. Step 5: Solve for x
    x = 132,518.41/474.63
  6. Step 6: Final answer
    x = 279.20

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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.