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Finding the Fourth Proportional to 571.66, 850.84 and 558.90

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Solution

The fourth proportional to 571.66, 850.84 and 558.90 is: 831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.66 : 850.84 = 558.90 : x
  2. Step 2: Convert to fraction form
    571.66/850.84 = 558.90/x
  3. Step 3: Cross multiply
    571.66x = 850.84 × 558.90
  4. Step 4: Simplify right side
    571.66x = 475,533.08
  5. Step 5: Solve for x
    x = 475,533.08/571.66
  6. Step 6: Final answer
    x = 831.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.