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Finding the Fourth Proportional to 615.03, 920.39 and 541.59

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Solution

The fourth proportional to 615.03, 920.39 and 541.59 is: 810.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.03 : 920.39 = 541.59 : x
  2. Step 2: Convert to fraction form
    615.03/920.39 = 541.59/x
  3. Step 3: Cross multiply
    615.03x = 920.39 × 541.59
  4. Step 4: Simplify right side
    615.03x = 498,471.31
  5. Step 5: Solve for x
    x = 498,471.31/615.03
  6. Step 6: Final answer
    x = 810.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.