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Finding the Fourth Proportional to 719.25, 992.94 and 676.05

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Solution

The fourth proportional to 719.25, 992.94 and 676.05 is: 933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.25 : 992.94 = 676.05 : x
  2. Step 2: Convert to fraction form
    719.25/992.94 = 676.05/x
  3. Step 3: Cross multiply
    719.25x = 992.94 × 676.05
  4. Step 4: Simplify right side
    719.25x = 671,277.09
  5. Step 5: Solve for x
    x = 671,277.09/719.25
  6. Step 6: Final answer
    x = 933.30

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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.