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Finding the Fourth Proportional to 401.34, 554.21 and 336.34

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Solution

The fourth proportional to 401.34, 554.21 and 336.34 is: 464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.34 : 554.21 = 336.34 : x
  2. Step 2: Convert to fraction form
    401.34/554.21 = 336.34/x
  3. Step 3: Cross multiply
    401.34x = 554.21 × 336.34
  4. Step 4: Simplify right side
    401.34x = 186,402.99
  5. Step 5: Solve for x
    x = 186,402.99/401.34
  6. Step 6: Final answer
    x = 464.45

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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.