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Finding the Fourth Proportional to 705.88, 972.66 and 484.12

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Solution

The fourth proportional to 705.88, 972.66 and 484.12 is: 667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.88 : 972.66 = 484.12 : x
  2. Step 2: Convert to fraction form
    705.88/972.66 = 484.12/x
  3. Step 3: Cross multiply
    705.88x = 972.66 × 484.12
  4. Step 4: Simplify right side
    705.88x = 470,884.16
  5. Step 5: Solve for x
    x = 470,884.16/705.88
  6. Step 6: Final answer
    x = 667.09

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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.