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Finding the Fourth Proportional to 729.51, 1,093.68 and 400.25

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Solution

The fourth proportional to 729.51, 1,093.68 and 400.25 is: 600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    729.51 : 1,093.68 = 400.25 : x
  2. Step 2: Convert to fraction form
    729.51/1,093.68 = 400.25/x
  3. Step 3: Cross multiply
    729.51x = 1,093.68 × 400.25
  4. Step 4: Simplify right side
    729.51x = 437,739.95
  5. Step 5: Solve for x
    x = 437,739.95/729.51
  6. Step 6: Final answer
    x = 600.05

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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.