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Finding the Fourth Proportional to 626.44, 864.46 and 346.67

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Solution

The fourth proportional to 626.44, 864.46 and 346.67 is: 478.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.44 : 864.46 = 346.67 : x
  2. Step 2: Convert to fraction form
    626.44/864.46 = 346.67/x
  3. Step 3: Cross multiply
    626.44x = 864.46 × 346.67
  4. Step 4: Simplify right side
    626.44x = 299,676.29
  5. Step 5: Solve for x
    x = 299,676.29/626.44
  6. Step 6: Final answer
    x = 478.38

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Double scale
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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.