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Finding the Fourth Proportional to 462.12, 637.72 and 255.12

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Solution

The fourth proportional to 462.12, 637.72 and 255.12 is: 352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.12 : 637.72 = 255.12 : x
  2. Step 2: Convert to fraction form
    462.12/637.72 = 255.12/x
  3. Step 3: Cross multiply
    462.12x = 637.72 × 255.12
  4. Step 4: Simplify right side
    462.12x = 162,695.13
  5. Step 5: Solve for x
    x = 162,695.13/462.12
  6. Step 6: Final answer
    x = 352.06

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