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Finding the Fourth Proportional to 540.10, 810.06 and 418.60

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Solution

The fourth proportional to 540.10, 810.06 and 418.60 is: 627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.10 : 810.06 = 418.60 : x
  2. Step 2: Convert to fraction form
    540.10/810.06 = 418.60/x
  3. Step 3: Cross multiply
    540.10x = 810.06 × 418.60
  4. Step 4: Simplify right side
    540.10x = 339,091.12
  5. Step 5: Solve for x
    x = 339,091.12/540.10
  6. Step 6: Final answer
    x = 627.83

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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.