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Finding the Fourth Proportional to 440, 607.14 and 243.46

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Solution

The fourth proportional to 440, 607.14 and 243.46 is: 335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    440 : 607.14 = 243.46 : x
  2. Step 2: Convert to fraction form
    440/607.14 = 243.46/x
  3. Step 3: Cross multiply
    440x = 607.14 × 243.46
  4. Step 4: Simplify right side
    440x = 147,814.30
  5. Step 5: Solve for x
    x = 147,814.30/440
  6. Step 6: Final answer
    x = 335.94

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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.