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Finding the Fourth Proportional to 1,388.60, 2,083.14 and 567.32

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Solution

The fourth proportional to 1,388.60, 2,083.14 and 567.32 is: 851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.60 : 2,083.14 = 567.32 : x
  2. Step 2: Convert to fraction form
    1,388.60/2,083.14 = 567.32/x
  3. Step 3: Cross multiply
    1,388.60x = 2,083.14 × 567.32
  4. Step 4: Simplify right side
    1,388.60x = 1,181,806.98
  5. Step 5: Solve for x
    x = 1,181,806.98/1,388.60
  6. Step 6: Final answer
    x = 851.08

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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.