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Finding the Fourth Proportional to 575.25, 862.15 and 453.03

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Solution

The fourth proportional to 575.25, 862.15 and 453.03 is: 678.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.25 : 862.15 = 453.03 : x
  2. Step 2: Convert to fraction form
    575.25/862.15 = 453.03/x
  3. Step 3: Cross multiply
    575.25x = 862.15 × 453.03
  4. Step 4: Simplify right side
    575.25x = 390,578.23
  5. Step 5: Solve for x
    x = 390,578.23/575.25
  6. Step 6: Final answer
    x = 678.97

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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.