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Finding the Fourth Proportional to 728.90, 1,093.44 and 241.91

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Solution

The fourth proportional to 728.90, 1,093.44 and 241.91 is: 362.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.90 : 1,093.44 = 241.91 : x
  2. Step 2: Convert to fraction form
    728.90/1,093.44 = 241.91/x
  3. Step 3: Cross multiply
    728.90x = 1,093.44 × 241.91
  4. Step 4: Simplify right side
    728.90x = 264,514.07
  5. Step 5: Solve for x
    x = 264,514.07/728.90
  6. Step 6: Final answer
    x = 362.89

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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.