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Finding the Fourth Proportional to 401.30, 601.95 and 127.37

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Solution

The fourth proportional to 401.30, 601.95 and 127.37 is: 191.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.30 : 601.95 = 127.37 : x
  2. Step 2: Convert to fraction form
    401.30/601.95 = 127.37/x
  3. Step 3: Cross multiply
    401.30x = 601.95 × 127.37
  4. Step 4: Simplify right side
    401.30x = 76,671.64
  5. Step 5: Solve for x
    x = 76,671.64/401.30
  6. Step 6: Final answer
    x = 191.06

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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.