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Finding the Fourth Proportional to 334.78, 461.37 and 260.98

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Solution

The fourth proportional to 334.78, 461.37 and 260.98 is: 359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.78 : 461.37 = 260.98 : x
  2. Step 2: Convert to fraction form
    334.78/461.37 = 260.98/x
  3. Step 3: Cross multiply
    334.78x = 461.37 × 260.98
  4. Step 4: Simplify right side
    334.78x = 120,408.34
  5. Step 5: Solve for x
    x = 120,408.34/334.78
  6. Step 6: Final answer
    x = 359.66

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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.