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Finding the Fourth Proportional to 569.20, 852.20 and 553.20

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Solution

The fourth proportional to 569.20, 852.20 and 553.20 is: 828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.20 : 852.20 = 553.20 : x
  2. Step 2: Convert to fraction form
    569.20/852.20 = 553.20/x
  3. Step 3: Cross multiply
    569.20x = 852.20 × 553.20
  4. Step 4: Simplify right side
    569.20x = 471,437.04
  5. Step 5: Solve for x
    x = 471,437.04/569.20
  6. Step 6: Final answer
    x = 828.24

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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.