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Finding the Fourth Proportional to 823.44, 1,132.15 and 734.08

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Solution

The fourth proportional to 823.44, 1,132.15 and 734.08 is: 1,009.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    823.44 : 1,132.15 = 734.08 : x
  2. Step 2: Convert to fraction form
    823.44/1,132.15 = 734.08/x
  3. Step 3: Cross multiply
    823.44x = 1,132.15 × 734.08
  4. Step 4: Simplify right side
    823.44x = 831,088.67
  5. Step 5: Solve for x
    x = 831,088.67/823.44
  6. Step 6: Final answer
    x = 1,009.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.