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Finding the Fourth Proportional to 335.69, 503.75 and 143.31

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Solution

The fourth proportional to 335.69, 503.75 and 143.31 is: 215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.69 : 503.75 = 143.31 : x
  2. Step 2: Convert to fraction form
    335.69/503.75 = 143.31/x
  3. Step 3: Cross multiply
    335.69x = 503.75 × 143.31
  4. Step 4: Simplify right side
    335.69x = 72,192.41
  5. Step 5: Solve for x
    x = 72,192.41/335.69
  6. Step 6: Final answer
    x = 215.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.