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Finding the Fourth Proportional to 440.49, 607.88 and 243.99

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Solution

The fourth proportional to 440.49, 607.88 and 243.99 is: 336.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.49 : 607.88 = 243.99 : x
  2. Step 2: Convert to fraction form
    440.49/607.88 = 243.99/x
  3. Step 3: Cross multiply
    440.49x = 607.88 × 243.99
  4. Step 4: Simplify right side
    440.49x = 148,315.42
  5. Step 5: Solve for x
    x = 148,315.42/440.49
  6. Step 6: Final answer
    x = 336.71

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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.