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Finding the Fourth Proportional to 572.80, 857.15 and 496.03

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Solution

The fourth proportional to 572.80, 857.15 and 496.03 is: 742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.80 : 857.15 = 496.03 : x
  2. Step 2: Convert to fraction form
    572.80/857.15 = 496.03/x
  3. Step 3: Cross multiply
    572.80x = 857.15 × 496.03
  4. Step 4: Simplify right side
    572.80x = 425,165.35
  5. Step 5: Solve for x
    x = 425,165.35/572.80
  6. Step 6: Final answer
    x = 742.26

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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.