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Finding the Fourth Proportional to 316.98, 437.43 and 222.59

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Solution

The fourth proportional to 316.98, 437.43 and 222.59 is: 307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.98 : 437.43 = 222.59 : x
  2. Step 2: Convert to fraction form
    316.98/437.43 = 222.59/x
  3. Step 3: Cross multiply
    316.98x = 437.43 × 222.59
  4. Step 4: Simplify right side
    316.98x = 97,365.36
  5. Step 5: Solve for x
    x = 97,365.36/316.98
  6. Step 6: Final answer
    x = 307.17

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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.