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Finding the Fourth Proportional to 950.92, 1,312.42 and 716.04

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Solution

The fourth proportional to 950.92, 1,312.42 and 716.04 is: 988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.92 : 1,312.42 = 716.04 : x
  2. Step 2: Convert to fraction form
    950.92/1,312.42 = 716.04/x
  3. Step 3: Cross multiply
    950.92x = 1,312.42 × 716.04
  4. Step 4: Simplify right side
    950.92x = 939,745.22
  5. Step 5: Solve for x
    x = 939,745.22/950.92
  6. Step 6: Final answer
    x = 988.25

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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.