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Finding the Fourth Proportional to 554.56, 765.45 and 344.62

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Solution

The fourth proportional to 554.56, 765.45 and 344.62 is: 475.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.56 : 765.45 = 344.62 : x
  2. Step 2: Convert to fraction form
    554.56/765.45 = 344.62/x
  3. Step 3: Cross multiply
    554.56x = 765.45 × 344.62
  4. Step 4: Simplify right side
    554.56x = 263,787.11
  5. Step 5: Solve for x
    x = 263,787.11/554.56
  6. Step 6: Final answer
    x = 475.67

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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.