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Finding the Fourth Proportional to 401.94, 554.63 and 227.25

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Solution

The fourth proportional to 401.94, 554.63 and 227.25 is: 313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.94 : 554.63 = 227.25 : x
  2. Step 2: Convert to fraction form
    401.94/554.63 = 227.25/x
  3. Step 3: Cross multiply
    401.94x = 554.63 × 227.25
  4. Step 4: Simplify right side
    401.94x = 126,038.53
  5. Step 5: Solve for x
    x = 126,038.53/401.94
  6. Step 6: Final answer
    x = 313.58

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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.