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Finding the Fourth Proportional to 335.90, 503.90 and 104.81

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Solution

The fourth proportional to 335.90, 503.90 and 104.81 is: 157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.90 : 503.90 = 104.81 : x
  2. Step 2: Convert to fraction form
    335.90/503.90 = 104.81/x
  3. Step 3: Cross multiply
    335.90x = 503.90 × 104.81
  4. Step 4: Simplify right side
    335.90x = 52,810.72
  5. Step 5: Solve for x
    x = 52,810.72/335.90
  6. Step 6: Final answer
    x = 157.22

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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.