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Finding the Fourth Proportional to 837.93, 1,157.43 and 681.60

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Solution

The fourth proportional to 837.93, 1,157.43 and 681.60 is: 941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.93 : 1,157.43 = 681.60 : x
  2. Step 2: Convert to fraction form
    837.93/1,157.43 = 681.60/x
  3. Step 3: Cross multiply
    837.93x = 1,157.43 × 681.60
  4. Step 4: Simplify right side
    837.93x = 788,904.29
  5. Step 5: Solve for x
    x = 788,904.29/837.93
  6. Step 6: Final answer
    x = 941.49

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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.