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Finding the Fourth Proportional to 701.39, 968.06 and 406.64

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Solution

The fourth proportional to 701.39, 968.06 and 406.64 is: 561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.39 : 968.06 = 406.64 : x
  2. Step 2: Convert to fraction form
    701.39/968.06 = 406.64/x
  3. Step 3: Cross multiply
    701.39x = 968.06 × 406.64
  4. Step 4: Simplify right side
    701.39x = 393,649.89
  5. Step 5: Solve for x
    x = 393,649.89/701.39
  6. Step 6: Final answer
    x = 561.24

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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.