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Finding the Fourth Proportional to 335.59, 503.40 and 143.23

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Solution

The fourth proportional to 335.59, 503.40 and 143.23 is: 214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.59 : 503.40 = 143.23 : x
  2. Step 2: Convert to fraction form
    335.59/503.40 = 143.23/x
  3. Step 3: Cross multiply
    335.59x = 503.40 × 143.23
  4. Step 4: Simplify right side
    335.59x = 72,101.98
  5. Step 5: Solve for x
    x = 72,101.98/335.59
  6. Step 6: Final answer
    x = 214.85

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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.