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Finding the Fourth Proportional to 631.28, 950.66 and 551.08

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Solution

The fourth proportional to 631.28, 950.66 and 551.08 is: 829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.28 : 950.66 = 551.08 : x
  2. Step 2: Convert to fraction form
    631.28/950.66 = 551.08/x
  3. Step 3: Cross multiply
    631.28x = 950.66 × 551.08
  4. Step 4: Simplify right side
    631.28x = 523,889.71
  5. Step 5: Solve for x
    x = 523,889.71/631.28
  6. Step 6: Final answer
    x = 829.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.