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Finding the Fourth Proportional to 956.32, 1,436.40 and 835.84

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Solution

The fourth proportional to 956.32, 1,436.40 and 835.84 is: 1,255.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.32 : 1,436.40 = 835.84 : x
  2. Step 2: Convert to fraction form
    956.32/1,436.40 = 835.84/x
  3. Step 3: Cross multiply
    956.32x = 1,436.40 × 835.84
  4. Step 4: Simplify right side
    956.32x = 1,200,600.58
  5. Step 5: Solve for x
    x = 1,200,600.58/956.32
  6. Step 6: Final answer
    x = 1,255.44

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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.