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Finding the Fourth Proportional to 346.95, 478.41 and 236.49

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Solution

The fourth proportional to 346.95, 478.41 and 236.49 is: 326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.95 : 478.41 = 236.49 : x
  2. Step 2: Convert to fraction form
    346.95/478.41 = 236.49/x
  3. Step 3: Cross multiply
    346.95x = 478.41 × 236.49
  4. Step 4: Simplify right side
    346.95x = 113,136.50
  5. Step 5: Solve for x
    x = 113,136.50/346.95
  6. Step 6: Final answer
    x = 326.09

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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.