Home / 1,378.28-2,066.06-556.34

Finding the Fourth Proportional to 1,378.28, 2,066.06 and 556.34

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Solution

The fourth proportional to 1,378.28, 2,066.06 and 556.34 is: 833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.28 : 2,066.06 = 556.34 : x
  2. Step 2: Convert to fraction form
    1,378.28/2,066.06 = 556.34/x
  3. Step 3: Cross multiply
    1,378.28x = 2,066.06 × 556.34
  4. Step 4: Simplify right side
    1,378.28x = 1,149,431.82
  5. Step 5: Solve for x
    x = 1,149,431.82/1,378.28
  6. Step 6: Final answer
    x = 833.96

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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.