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Finding the Fourth Proportional to 569.12, 784.72 and 495.24

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Solution

The fourth proportional to 569.12, 784.72 and 495.24 is: 682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.12 : 784.72 = 495.24 : x
  2. Step 2: Convert to fraction form
    569.12/784.72 = 495.24/x
  3. Step 3: Cross multiply
    569.12x = 784.72 × 495.24
  4. Step 4: Simplify right side
    569.12x = 388,624.73
  5. Step 5: Solve for x
    x = 388,624.73/569.12
  6. Step 6: Final answer
    x = 682.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.