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Finding the Fourth Proportional to 709.06, 1,066.02 and 651.44

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Solution

The fourth proportional to 709.06, 1,066.02 and 651.44 is: 979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.06 : 1,066.02 = 651.44 : x
  2. Step 2: Convert to fraction form
    709.06/1,066.02 = 651.44/x
  3. Step 3: Cross multiply
    709.06x = 1,066.02 × 651.44
  4. Step 4: Simplify right side
    709.06x = 694,448.07
  5. Step 5: Solve for x
    x = 694,448.07/709.06
  6. Step 6: Final answer
    x = 979.39

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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.