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Finding the Fourth Proportional to 572.24, 857.23 and 280.02

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Solution

The fourth proportional to 572.24, 857.23 and 280.02 is: 419.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.24 : 857.23 = 280.02 : x
  2. Step 2: Convert to fraction form
    572.24/857.23 = 280.02/x
  3. Step 3: Cross multiply
    572.24x = 857.23 × 280.02
  4. Step 4: Simplify right side
    572.24x = 240,041.54
  5. Step 5: Solve for x
    x = 240,041.54/572.24
  6. Step 6: Final answer
    x = 419.48

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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.