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Finding the Fourth Proportional to 713.06, 984.16 and 681.93

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Solution

The fourth proportional to 713.06, 984.16 and 681.93 is: 941.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.06 : 984.16 = 681.93 : x
  2. Step 2: Convert to fraction form
    713.06/984.16 = 681.93/x
  3. Step 3: Cross multiply
    713.06x = 984.16 × 681.93
  4. Step 4: Simplify right side
    713.06x = 671,128.23
  5. Step 5: Solve for x
    x = 671,128.23/713.06
  6. Step 6: Final answer
    x = 941.19

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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.