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Finding the Fourth Proportional to 1,475.76, 2,213.82 and 725.52

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Solution

The fourth proportional to 1,475.76, 2,213.82 and 725.52 is: 1,088.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.76 : 2,213.82 = 725.52 : x
  2. Step 2: Convert to fraction form
    1,475.76/2,213.82 = 725.52/x
  3. Step 3: Cross multiply
    1,475.76x = 2,213.82 × 725.52
  4. Step 4: Simplify right side
    1,475.76x = 1,606,170.69
  5. Step 5: Solve for x
    x = 1,606,170.69/1,475.76
  6. Step 6: Final answer
    x = 1,088.37

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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.