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Finding the Fourth Proportional to 495.64, 682.74 and 472.12

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Solution

The fourth proportional to 495.64, 682.74 and 472.12 is: 650.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.64 : 682.74 = 472.12 : x
  2. Step 2: Convert to fraction form
    495.64/682.74 = 472.12/x
  3. Step 3: Cross multiply
    495.64x = 682.74 × 472.12
  4. Step 4: Simplify right side
    495.64x = 322,335.21
  5. Step 5: Solve for x
    x = 322,335.21/495.64
  6. Step 6: Final answer
    x = 650.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.