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Finding the Fourth Proportional to 728.15, 1,093.62 and 624.27

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Solution

The fourth proportional to 728.15, 1,093.62 and 624.27 is: 937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.15 : 1,093.62 = 624.27 : x
  2. Step 2: Convert to fraction form
    728.15/1,093.62 = 624.27/x
  3. Step 3: Cross multiply
    728.15x = 1,093.62 × 624.27
  4. Step 4: Simplify right side
    728.15x = 682,714.16
  5. Step 5: Solve for x
    x = 682,714.16/728.15
  6. Step 6: Final answer
    x = 937.60

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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.