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Finding the Fourth Proportional to 287.00, 396.08 and 162.68

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Solution

The fourth proportional to 287.00, 396.08 and 162.68 is: 224.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.00 : 396.08 = 162.68 : x
  2. Step 2: Convert to fraction form
    287.00/396.08 = 162.68/x
  3. Step 3: Cross multiply
    287.00x = 396.08 × 162.68
  4. Step 4: Simplify right side
    287.00x = 64,431.50
  5. Step 5: Solve for x
    x = 64,431.50/287.00
  6. Step 6: Final answer
    x = 224.50

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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.