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Finding the Fourth Proportional to 251.88, 347.60 and 207.32

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Solution

The fourth proportional to 251.88, 347.60 and 207.32 is: 286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.88 : 347.60 = 207.32 : x
  2. Step 2: Convert to fraction form
    251.88/347.60 = 207.32/x
  3. Step 3: Cross multiply
    251.88x = 347.60 × 207.32
  4. Step 4: Simplify right side
    251.88x = 72,064.43
  5. Step 5: Solve for x
    x = 72,064.43/251.88
  6. Step 6: Final answer
    x = 286.11

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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.