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Finding the Fourth Proportional to 540.90, 746.25 and 354.60

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Solution

The fourth proportional to 540.90, 746.25 and 354.60 is: 489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.90 : 746.25 = 354.60 : x
  2. Step 2: Convert to fraction form
    540.90/746.25 = 354.60/x
  3. Step 3: Cross multiply
    540.90x = 746.25 × 354.60
  4. Step 4: Simplify right side
    540.90x = 264,620.25
  5. Step 5: Solve for x
    x = 264,620.25/540.90
  6. Step 6: Final answer
    x = 489.22

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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.