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Finding the Fourth Proportional to 958.06, 1,320.91 and 734.26

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Solution

The fourth proportional to 958.06, 1,320.91 and 734.26 is: 1,012.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.06 : 1,320.91 = 734.26 : x
  2. Step 2: Convert to fraction form
    958.06/1,320.91 = 734.26/x
  3. Step 3: Cross multiply
    958.06x = 1,320.91 × 734.26
  4. Step 4: Simplify right side
    958.06x = 969,891.38
  5. Step 5: Solve for x
    x = 969,891.38/958.06
  6. Step 6: Final answer
    x = 1,012.35

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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.