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Finding the Fourth Proportional to 677.70, 1,018.80 and 588.60

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Solution

The fourth proportional to 677.70, 1,018.80 and 588.60 is: 884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.70 : 1,018.80 = 588.60 : x
  2. Step 2: Convert to fraction form
    677.70/1,018.80 = 588.60/x
  3. Step 3: Cross multiply
    677.70x = 1,018.80 × 588.60
  4. Step 4: Simplify right side
    677.70x = 599,665.68
  5. Step 5: Solve for x
    x = 599,665.68/677.70
  6. Step 6: Final answer
    x = 884.85

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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.