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Finding the Fourth Proportional to 656.22, 983.34 and 518.70

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Solution

The fourth proportional to 656.22, 983.34 and 518.70 is: 777.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.22 : 983.34 = 518.70 : x
  2. Step 2: Convert to fraction form
    656.22/983.34 = 518.70/x
  3. Step 3: Cross multiply
    656.22x = 983.34 × 518.70
  4. Step 4: Simplify right side
    656.22x = 510,058.46
  5. Step 5: Solve for x
    x = 510,058.46/656.22
  6. Step 6: Final answer
    x = 777.27

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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.