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Finding the Fourth Proportional to 803.62, 1,109.01 and 541.18

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Solution

The fourth proportional to 803.62, 1,109.01 and 541.18 is: 746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.62 : 1,109.01 = 541.18 : x
  2. Step 2: Convert to fraction form
    803.62/1,109.01 = 541.18/x
  3. Step 3: Cross multiply
    803.62x = 1,109.01 × 541.18
  4. Step 4: Simplify right side
    803.62x = 600,174.03
  5. Step 5: Solve for x
    x = 600,174.03/803.62
  6. Step 6: Final answer
    x = 746.84

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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.