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Finding the Fourth Proportional to 964.01, 1,327.32 and 851.90

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Solution

The fourth proportional to 964.01, 1,327.32 and 851.90 is: 1,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.01 : 1,327.32 = 851.90 : x
  2. Step 2: Convert to fraction form
    964.01/1,327.32 = 851.90/x
  3. Step 3: Cross multiply
    964.01x = 1,327.32 × 851.90
  4. Step 4: Simplify right side
    964.01x = 1,130,737.27
  5. Step 5: Solve for x
    x = 1,130,737.27/964.01
  6. Step 6: Final answer
    x = 1,172.95

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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.