Home / 1,475.34-2,212.96-379.72

Finding the Fourth Proportional to 1,475.34, 2,212.96 and 379.72

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Solution

The fourth proportional to 1,475.34, 2,212.96 and 379.72 is: 569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.34 : 2,212.96 = 379.72 : x
  2. Step 2: Convert to fraction form
    1,475.34/2,212.96 = 379.72/x
  3. Step 3: Cross multiply
    1,475.34x = 2,212.96 × 379.72
  4. Step 4: Simplify right side
    1,475.34x = 840,292.21
  5. Step 5: Solve for x
    x = 840,292.21/1,475.34
  6. Step 6: Final answer
    x = 569.56

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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.