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Finding the Fourth Proportional to 958.09, 1,321.77 and 710.02

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Solution

The fourth proportional to 958.09, 1,321.77 and 710.02 is: 979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.09 : 1,321.77 = 710.02 : x
  2. Step 2: Convert to fraction form
    958.09/1,321.77 = 710.02/x
  3. Step 3: Cross multiply
    958.09x = 1,321.77 × 710.02
  4. Step 4: Simplify right side
    958.09x = 938,483.14
  5. Step 5: Solve for x
    x = 938,483.14/958.09
  6. Step 6: Final answer
    x = 979.54

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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.