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Finding the Fourth Proportional to 723.95, 1,086.10 and 236.99

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Solution

The fourth proportional to 723.95, 1,086.10 and 236.99 is: 355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.95 : 1,086.10 = 236.99 : x
  2. Step 2: Convert to fraction form
    723.95/1,086.10 = 236.99/x
  3. Step 3: Cross multiply
    723.95x = 1,086.10 × 236.99
  4. Step 4: Simplify right side
    723.95x = 257,389.41
  5. Step 5: Solve for x
    x = 257,389.41/723.95
  6. Step 6: Final answer
    x = 355.53

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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.