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Finding the Fourth Proportional to 793.11, 1,094.40 and 438.99

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Solution

The fourth proportional to 793.11, 1,094.40 and 438.99 is: 605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.11 : 1,094.40 = 438.99 : x
  2. Step 2: Convert to fraction form
    793.11/1,094.40 = 438.99/x
  3. Step 3: Cross multiply
    793.11x = 1,094.40 × 438.99
  4. Step 4: Simplify right side
    793.11x = 480,430.66
  5. Step 5: Solve for x
    x = 480,430.66/793.11
  6. Step 6: Final answer
    x = 605.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.