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Finding the Fourth Proportional to 1,079.25, 1,489.28 and 607.07

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Solution

The fourth proportional to 1,079.25, 1,489.28 and 607.07 is: 837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.25 : 1,489.28 = 607.07 : x
  2. Step 2: Convert to fraction form
    1,079.25/1,489.28 = 607.07/x
  3. Step 3: Cross multiply
    1,079.25x = 1,489.28 × 607.07
  4. Step 4: Simplify right side
    1,079.25x = 904,086.73
  5. Step 5: Solve for x
    x = 904,086.73/1,079.25
  6. Step 6: Final answer
    x = 837.70

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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.