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Finding the Fourth Proportional to 958.63, 1,429.61 and 835.91

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Solution

The fourth proportional to 958.63, 1,429.61 and 835.91 is: 1,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.63 : 1,429.61 = 835.91 : x
  2. Step 2: Convert to fraction form
    958.63/1,429.61 = 835.91/x
  3. Step 3: Cross multiply
    958.63x = 1,429.61 × 835.91
  4. Step 4: Simplify right side
    958.63x = 1,195,025.30
  5. Step 5: Solve for x
    x = 1,195,025.30/958.63
  6. Step 6: Final answer
    x = 1,246.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.