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Finding the Fourth Proportional to 657.16, 985.80 and 224.21

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Solution

The fourth proportional to 657.16, 985.80 and 224.21 is: 336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.16 : 985.80 = 224.21 : x
  2. Step 2: Convert to fraction form
    657.16/985.80 = 224.21/x
  3. Step 3: Cross multiply
    657.16x = 985.80 × 224.21
  4. Step 4: Simplify right side
    657.16x = 221,026.22
  5. Step 5: Solve for x
    x = 221,026.22/657.16
  6. Step 6: Final answer
    x = 336.34

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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.