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Finding the Fourth Proportional to 1,027.59, 1,418.06 and 677.67

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Solution

The fourth proportional to 1,027.59, 1,418.06 and 677.67 is: 935.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.59 : 1,418.06 = 677.67 : x
  2. Step 2: Convert to fraction form
    1,027.59/1,418.06 = 677.67/x
  3. Step 3: Cross multiply
    1,027.59x = 1,418.06 × 677.67
  4. Step 4: Simplify right side
    1,027.59x = 960,973.33
  5. Step 5: Solve for x
    x = 960,973.33/1,027.59
  6. Step 6: Final answer
    x = 935.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.