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Finding the Fourth Proportional to 967.35, 1,334.73 and 631.33

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Solution

The fourth proportional to 967.35, 1,334.73 and 631.33 is: 871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.35 : 1,334.73 = 631.33 : x
  2. Step 2: Convert to fraction form
    967.35/1,334.73 = 631.33/x
  3. Step 3: Cross multiply
    967.35x = 1,334.73 × 631.33
  4. Step 4: Simplify right side
    967.35x = 842,655.09
  5. Step 5: Solve for x
    x = 842,655.09/967.35
  6. Step 6: Final answer
    x = 871.10

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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.