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Finding the Fourth Proportional to 656.07, 983.64 and 331.26

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Solution

The fourth proportional to 656.07, 983.64 and 331.26 is: 496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.07 : 983.64 = 331.26 : x
  2. Step 2: Convert to fraction form
    656.07/983.64 = 331.26/x
  3. Step 3: Cross multiply
    656.07x = 983.64 × 331.26
  4. Step 4: Simplify right side
    656.07x = 325,840.59
  5. Step 5: Solve for x
    x = 325,840.59/656.07
  6. Step 6: Final answer
    x = 496.66

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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.