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Finding the Fourth Proportional to 319.37, 479.16 and 134.30

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Solution

The fourth proportional to 319.37, 479.16 and 134.30 is: 201.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.37 : 479.16 = 134.30 : x
  2. Step 2: Convert to fraction form
    319.37/479.16 = 134.30/x
  3. Step 3: Cross multiply
    319.37x = 479.16 × 134.30
  4. Step 4: Simplify right side
    319.37x = 64,352.39
  5. Step 5: Solve for x
    x = 64,352.39/319.37
  6. Step 6: Final answer
    x = 201.50

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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.