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Finding the Fourth Proportional to 440.09, 607.28 and 243.59

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Solution

The fourth proportional to 440.09, 607.28 and 243.59 is: 336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.09 : 607.28 = 243.59 : x
  2. Step 2: Convert to fraction form
    440.09/607.28 = 243.59/x
  3. Step 3: Cross multiply
    440.09x = 607.28 × 243.59
  4. Step 4: Simplify right side
    440.09x = 147,923.08
  5. Step 5: Solve for x
    x = 147,923.08/440.09
  6. Step 6: Final answer
    x = 336.12

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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.