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Finding the Fourth Proportional to 675.48, 1,015.68 and 622.02

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Solution

The fourth proportional to 675.48, 1,015.68 and 622.02 is: 935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.48 : 1,015.68 = 622.02 : x
  2. Step 2: Convert to fraction form
    675.48/1,015.68 = 622.02/x
  3. Step 3: Cross multiply
    675.48x = 1,015.68 × 622.02
  4. Step 4: Simplify right side
    675.48x = 631,773.27
  5. Step 5: Solve for x
    x = 631,773.27/675.48
  6. Step 6: Final answer
    x = 935.30

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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.