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Finding the Fourth Proportional to 1,571.25, 2,357.23 and 531.21

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Solution

The fourth proportional to 1,571.25, 2,357.23 and 531.21 is: 796.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.25 : 2,357.23 = 531.21 : x
  2. Step 2: Convert to fraction form
    1,571.25/2,357.23 = 531.21/x
  3. Step 3: Cross multiply
    1,571.25x = 2,357.23 × 531.21
  4. Step 4: Simplify right side
    1,571.25x = 1,252,184.15
  5. Step 5: Solve for x
    x = 1,252,184.15/1,571.25
  6. Step 6: Final answer
    x = 796.94

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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.