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Finding the Fourth Proportional to 335.79, 503.69 and 104.76

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Solution

The fourth proportional to 335.79, 503.69 and 104.76 is: 157.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.79 : 503.69 = 104.76 : x
  2. Step 2: Convert to fraction form
    335.79/503.69 = 104.76/x
  3. Step 3: Cross multiply
    335.79x = 503.69 × 104.76
  4. Step 4: Simplify right side
    335.79x = 52,766.04
  5. Step 5: Solve for x
    x = 52,766.04/335.79
  6. Step 6: Final answer
    x = 157.14

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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.