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Finding the Fourth Proportional to 451.59, 676.40 and 348.12

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Solution

The fourth proportional to 451.59, 676.40 and 348.12 is: 521.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.59 : 676.40 = 348.12 : x
  2. Step 2: Convert to fraction form
    451.59/676.40 = 348.12/x
  3. Step 3: Cross multiply
    451.59x = 676.40 × 348.12
  4. Step 4: Simplify right side
    451.59x = 235,466.63
  5. Step 5: Solve for x
    x = 235,466.63/451.59
  6. Step 6: Final answer
    x = 521.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.