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Finding the Fourth Proportional to 571.90, 850.51 and 553.68

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Solution

The fourth proportional to 571.90, 850.51 and 553.68 is: 823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.90 : 850.51 = 553.68 : x
  2. Step 2: Convert to fraction form
    571.90/850.51 = 553.68/x
  3. Step 3: Cross multiply
    571.90x = 850.51 × 553.68
  4. Step 4: Simplify right side
    571.90x = 470,910.38
  5. Step 5: Solve for x
    x = 470,910.38/571.90
  6. Step 6: Final answer
    x = 823.41

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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.