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Finding the Fourth Proportional to 208.56, 287.36 and 150.24

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Solution

The fourth proportional to 208.56, 287.36 and 150.24 is: 207.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.56 : 287.36 = 150.24 : x
  2. Step 2: Convert to fraction form
    208.56/287.36 = 150.24/x
  3. Step 3: Cross multiply
    208.56x = 287.36 × 150.24
  4. Step 4: Simplify right side
    208.56x = 43,172.97
  5. Step 5: Solve for x
    x = 43,172.97/208.56
  6. Step 6: Final answer
    x = 207.01

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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.