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Finding the Fourth Proportional to 631.26, 945.76 and 539.02

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Solution

The fourth proportional to 631.26, 945.76 and 539.02 is: 807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.26 : 945.76 = 539.02 : x
  2. Step 2: Convert to fraction form
    631.26/945.76 = 539.02/x
  3. Step 3: Cross multiply
    631.26x = 945.76 × 539.02
  4. Step 4: Simplify right side
    631.26x = 509,783.56
  5. Step 5: Solve for x
    x = 509,783.56/631.26
  6. Step 6: Final answer
    x = 807.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.