Home / 1,297.51-1,943.55-604.78

Finding the Fourth Proportional to 1,297.51, 1,943.55 and 604.78

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Solution

The fourth proportional to 1,297.51, 1,943.55 and 604.78 is: 905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.51 : 1,943.55 = 604.78 : x
  2. Step 2: Convert to fraction form
    1,297.51/1,943.55 = 604.78/x
  3. Step 3: Cross multiply
    1,297.51x = 1,943.55 × 604.78
  4. Step 4: Simplify right side
    1,297.51x = 1,175,415.31
  5. Step 5: Solve for x
    x = 1,175,415.31/1,297.51
  6. Step 6: Final answer
    x = 905.90

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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.