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Finding the Fourth Proportional to 967.07, 1,334.40 and 634.86

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Solution

The fourth proportional to 967.07, 1,334.40 and 634.86 is: 876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.07 : 1,334.40 = 634.86 : x
  2. Step 2: Convert to fraction form
    967.07/1,334.40 = 634.86/x
  3. Step 3: Cross multiply
    967.07x = 1,334.40 × 634.86
  4. Step 4: Simplify right side
    967.07x = 847,157.18
  5. Step 5: Solve for x
    x = 847,157.18/967.07
  6. Step 6: Final answer
    x = 876.01

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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.