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Finding the Fourth Proportional to 1,388.69, 2,083.13 and 567.01

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Solution

The fourth proportional to 1,388.69, 2,083.13 and 567.01 is: 850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.69 : 2,083.13 = 567.01 : x
  2. Step 2: Convert to fraction form
    1,388.69/2,083.13 = 567.01/x
  3. Step 3: Cross multiply
    1,388.69x = 2,083.13 × 567.01
  4. Step 4: Simplify right side
    1,388.69x = 1,181,155.54
  5. Step 5: Solve for x
    x = 1,181,155.54/1,388.69
  6. Step 6: Final answer
    x = 850.55

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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.