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Finding the Fourth Proportional to 540.55, 811.23 and 297.28

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Solution

The fourth proportional to 540.55, 811.23 and 297.28 is: 446.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.55 : 811.23 = 297.28 : x
  2. Step 2: Convert to fraction form
    540.55/811.23 = 297.28/x
  3. Step 3: Cross multiply
    540.55x = 811.23 × 297.28
  4. Step 4: Simplify right side
    540.55x = 241,162.45
  5. Step 5: Solve for x
    x = 241,162.45/540.55
  6. Step 6: Final answer
    x = 446.14

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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.