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Finding the Fourth Proportional to 1,571.46, 2,357.57 and 475.76

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Solution

The fourth proportional to 1,571.46, 2,357.57 and 475.76 is: 713.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.46 : 2,357.57 = 475.76 : x
  2. Step 2: Convert to fraction form
    1,571.46/2,357.57 = 475.76/x
  3. Step 3: Cross multiply
    1,571.46x = 2,357.57 × 475.76
  4. Step 4: Simplify right side
    1,571.46x = 1,121,637.50
  5. Step 5: Solve for x
    x = 1,121,637.50/1,571.46
  6. Step 6: Final answer
    x = 713.76

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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.