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Finding the Fourth Proportional to 958.41, 1,322.55 and 626.63

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Solution

The fourth proportional to 958.41, 1,322.55 and 626.63 is: 864.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.41 : 1,322.55 = 626.63 : x
  2. Step 2: Convert to fraction form
    958.41/1,322.55 = 626.63/x
  3. Step 3: Cross multiply
    958.41x = 1,322.55 × 626.63
  4. Step 4: Simplify right side
    958.41x = 828,742.89
  5. Step 5: Solve for x
    x = 828,742.89/958.41
  6. Step 6: Final answer
    x = 864.71

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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.