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Finding the Fourth Proportional to 571.24, 855.24 and 434.84

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Solution

The fourth proportional to 571.24, 855.24 and 434.84 is: 651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.24 : 855.24 = 434.84 : x
  2. Step 2: Convert to fraction form
    571.24/855.24 = 434.84/x
  3. Step 3: Cross multiply
    571.24x = 855.24 × 434.84
  4. Step 4: Simplify right side
    571.24x = 371,892.56
  5. Step 5: Solve for x
    x = 371,892.56/571.24
  6. Step 6: Final answer
    x = 651.03

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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.