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Finding the Fourth Proportional to 1,330.23, 1,835.90 and 958.44

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Solution

The fourth proportional to 1,330.23, 1,835.90 and 958.44 is: 1,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.23 : 1,835.90 = 958.44 : x
  2. Step 2: Convert to fraction form
    1,330.23/1,835.90 = 958.44/x
  3. Step 3: Cross multiply
    1,330.23x = 1,835.90 × 958.44
  4. Step 4: Simplify right side
    1,330.23x = 1,759,605.68
  5. Step 5: Solve for x
    x = 1,759,605.68/1,330.23
  6. Step 6: Final answer
    x = 1,322.78

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1.5x scale

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.