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Finding the Fourth Proportional to 656.98, 985.68 and 224.20

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Solution

The fourth proportional to 656.98, 985.68 and 224.20 is: 336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.98 : 985.68 = 224.20 : x
  2. Step 2: Convert to fraction form
    656.98/985.68 = 224.20/x
  3. Step 3: Cross multiply
    656.98x = 985.68 × 224.20
  4. Step 4: Simplify right side
    656.98x = 220,989.46
  5. Step 5: Solve for x
    x = 220,989.46/656.98
  6. Step 6: Final answer
    x = 336.37

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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.