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Finding the Fourth Proportional to 795.31, 1,097.75 and 720.16

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Solution

The fourth proportional to 795.31, 1,097.75 and 720.16 is: 994.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.31 : 1,097.75 = 720.16 : x
  2. Step 2: Convert to fraction form
    795.31/1,097.75 = 720.16/x
  3. Step 3: Cross multiply
    795.31x = 1,097.75 × 720.16
  4. Step 4: Simplify right side
    795.31x = 790,555.64
  5. Step 5: Solve for x
    x = 790,555.64/795.31
  6. Step 6: Final answer
    x = 994.02

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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.