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Finding the Fourth Proportional to 1,673.91, 2,511.18 and 578.07

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Solution

The fourth proportional to 1,673.91, 2,511.18 and 578.07 is: 867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.91 : 2,511.18 = 578.07 : x
  2. Step 2: Convert to fraction form
    1,673.91/2,511.18 = 578.07/x
  3. Step 3: Cross multiply
    1,673.91x = 2,511.18 × 578.07
  4. Step 4: Simplify right side
    1,673.91x = 1,451,637.82
  5. Step 5: Solve for x
    x = 1,451,637.82/1,673.91
  6. Step 6: Final answer
    x = 867.21

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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.