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Finding the Fourth Proportional to 1,079.36, 1,489.51 and 607.27

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Solution

The fourth proportional to 1,079.36, 1,489.51 and 607.27 is: 838.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.36 : 1,489.51 = 607.27 : x
  2. Step 2: Convert to fraction form
    1,079.36/1,489.51 = 607.27/x
  3. Step 3: Cross multiply
    1,079.36x = 1,489.51 × 607.27
  4. Step 4: Simplify right side
    1,079.36x = 904,529.50
  5. Step 5: Solve for x
    x = 904,529.50/1,079.36
  6. Step 6: Final answer
    x = 838.03

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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.