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Finding the Fourth Proportional to 958.89, 1,323.39 and 585.79

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Solution

The fourth proportional to 958.89, 1,323.39 and 585.79 is: 808.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.89 : 1,323.39 = 585.79 : x
  2. Step 2: Convert to fraction form
    958.89/1,323.39 = 585.79/x
  3. Step 3: Cross multiply
    958.89x = 1,323.39 × 585.79
  4. Step 4: Simplify right side
    958.89x = 775,228.63
  5. Step 5: Solve for x
    x = 775,228.63/958.89
  6. Step 6: Final answer
    x = 808.46

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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.