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Finding the Fourth Proportional to 540.50, 810 and 445.46

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Solution

The fourth proportional to 540.50, 810 and 445.46 is: 667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.50 : 810 = 445.46 : x
  2. Step 2: Convert to fraction form
    540.50/810 = 445.46/x
  3. Step 3: Cross multiply
    540.50x = 810 × 445.46
  4. Step 4: Simplify right side
    540.50x = 360,822.60
  5. Step 5: Solve for x
    x = 360,822.60/540.50
  6. Step 6: Final answer
    x = 667.57

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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.