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Finding the Fourth Proportional to 363.51, 544.85 and 143.93

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Solution

The fourth proportional to 363.51, 544.85 and 143.93 is: 215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.51 : 544.85 = 143.93 : x
  2. Step 2: Convert to fraction form
    363.51/544.85 = 143.93/x
  3. Step 3: Cross multiply
    363.51x = 544.85 × 143.93
  4. Step 4: Simplify right side
    363.51x = 78,419.26
  5. Step 5: Solve for x
    x = 78,419.26/363.51
  6. Step 6: Final answer
    x = 215.73

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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.