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Finding the Fourth Proportional to 439.51, 606.54 and 243.04

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Solution

The fourth proportional to 439.51, 606.54 and 243.04 is: 335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.51 : 606.54 = 243.04 : x
  2. Step 2: Convert to fraction form
    439.51/606.54 = 243.04/x
  3. Step 3: Cross multiply
    439.51x = 606.54 × 243.04
  4. Step 4: Simplify right side
    439.51x = 147,413.48
  5. Step 5: Solve for x
    x = 147,413.48/439.51
  6. Step 6: Final answer
    x = 335.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.