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Finding the Fourth Proportional to 716.12, 981.81 and 703.16

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Solution

The fourth proportional to 716.12, 981.81 and 703.16 is: 964.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.12 : 981.81 = 703.16 : x
  2. Step 2: Convert to fraction form
    716.12/981.81 = 703.16/x
  3. Step 3: Cross multiply
    716.12x = 981.81 × 703.16
  4. Step 4: Simplify right side
    716.12x = 690,369.52
  5. Step 5: Solve for x
    x = 690,369.52/716.12
  6. Step 6: Final answer
    x = 964.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.