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Finding the Fourth Proportional to 843.42, 1,164.08 and 703.32

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Solution

The fourth proportional to 843.42, 1,164.08 and 703.32 is: 970.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.42 : 1,164.08 = 703.32 : x
  2. Step 2: Convert to fraction form
    843.42/1,164.08 = 703.32/x
  3. Step 3: Cross multiply
    843.42x = 1,164.08 × 703.32
  4. Step 4: Simplify right side
    843.42x = 818,718.14
  5. Step 5: Solve for x
    x = 818,718.14/843.42
  6. Step 6: Final answer
    x = 970.71

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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.