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Finding the Fourth Proportional to 1,407.44, 2,111.57 and 585.56

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Solution

The fourth proportional to 1,407.44, 2,111.57 and 585.56 is: 878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.44 : 2,111.57 = 585.56 : x
  2. Step 2: Convert to fraction form
    1,407.44/2,111.57 = 585.56/x
  3. Step 3: Cross multiply
    1,407.44x = 2,111.57 × 585.56
  4. Step 4: Simplify right side
    1,407.44x = 1,236,450.93
  5. Step 5: Solve for x
    x = 1,236,450.93/1,407.44
  6. Step 6: Final answer
    x = 878.51

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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.