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Finding the Fourth Proportional to 569.28, 852.40 and 477.28

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Solution

The fourth proportional to 569.28, 852.40 and 477.28 is: 714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.28 : 852.40 = 477.28 : x
  2. Step 2: Convert to fraction form
    569.28/852.40 = 477.28/x
  3. Step 3: Cross multiply
    569.28x = 852.40 × 477.28
  4. Step 4: Simplify right side
    569.28x = 406,833.47
  5. Step 5: Solve for x
    x = 406,833.47/569.28
  6. Step 6: Final answer
    x = 714.65

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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.