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Finding the Fourth Proportional to 425.00, 636.48 and 262.19

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Solution

The fourth proportional to 425.00, 636.48 and 262.19 is: 392.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.00 : 636.48 = 262.19 : x
  2. Step 2: Convert to fraction form
    425.00/636.48 = 262.19/x
  3. Step 3: Cross multiply
    425.00x = 636.48 × 262.19
  4. Step 4: Simplify right side
    425.00x = 166,875.51
  5. Step 5: Solve for x
    x = 166,875.51/425.00
  6. Step 6: Final answer
    x = 392.65

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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.