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Finding the Fourth Proportional to 440.20, 607.46 and 243.71

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Solution

The fourth proportional to 440.20, 607.46 and 243.71 is: 336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.20 : 607.46 = 243.71 : x
  2. Step 2: Convert to fraction form
    440.20/607.46 = 243.71/x
  3. Step 3: Cross multiply
    440.20x = 607.46 × 243.71
  4. Step 4: Simplify right side
    440.20x = 148,042.10
  5. Step 5: Solve for x
    x = 148,042.10/440.20
  6. Step 6: Final answer
    x = 336.31

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1.5x scale

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.