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Finding the Fourth Proportional to 631.64, 947.38 and 469.56

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Solution

The fourth proportional to 631.64, 947.38 and 469.56 is: 704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.64 : 947.38 = 469.56 : x
  2. Step 2: Convert to fraction form
    631.64/947.38 = 469.56/x
  3. Step 3: Cross multiply
    631.64x = 947.38 × 469.56
  4. Step 4: Simplify right side
    631.64x = 444,851.75
  5. Step 5: Solve for x
    x = 444,851.75/631.64
  6. Step 6: Final answer
    x = 704.28

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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.