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Finding the Fourth Proportional to 333.31, 500.18 and 127.90

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Solution

The fourth proportional to 333.31, 500.18 and 127.90 is: 191.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.31 : 500.18 = 127.90 : x
  2. Step 2: Convert to fraction form
    333.31/500.18 = 127.90/x
  3. Step 3: Cross multiply
    333.31x = 500.18 × 127.90
  4. Step 4: Simplify right side
    333.31x = 63,973.02
  5. Step 5: Solve for x
    x = 63,973.02/333.31
  6. Step 6: Final answer
    x = 191.93

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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.