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Finding the Fourth Proportional to 540, 808.30 and 453.44

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Solution

The fourth proportional to 540, 808.30 and 453.44 is: 678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    540 : 808.30 = 453.44 : x
  2. Step 2: Convert to fraction form
    540/808.30 = 453.44/x
  3. Step 3: Cross multiply
    540x = 808.30 × 453.44
  4. Step 4: Simplify right side
    540x = 366,515.55
  5. Step 5: Solve for x
    x = 366,515.55/540
  6. Step 6: Final answer
    x = 678.73

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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.