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Finding the Fourth Proportional to 694.77, 957.56 and 484.28

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Solution

The fourth proportional to 694.77, 957.56 and 484.28 is: 667.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.77 : 957.56 = 484.28 : x
  2. Step 2: Convert to fraction form
    694.77/957.56 = 484.28/x
  3. Step 3: Cross multiply
    694.77x = 957.56 × 484.28
  4. Step 4: Simplify right side
    694.77x = 463,719.95
  5. Step 5: Solve for x
    x = 463,719.95/694.77
  6. Step 6: Final answer
    x = 667.44

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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.