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Finding the Fourth Proportional to 800.54, 1,103 and 538.10

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Solution

The fourth proportional to 800.54, 1,103 and 538.10 is: 741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.54 : 1,103 = 538.10 : x
  2. Step 2: Convert to fraction form
    800.54/1,103 = 538.10/x
  3. Step 3: Cross multiply
    800.54x = 1,103 × 538.10
  4. Step 4: Simplify right side
    800.54x = 593,524.30
  5. Step 5: Solve for x
    x = 593,524.30/800.54
  6. Step 6: Final answer
    x = 741.40

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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.