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Finding the Fourth Proportional to 245.94, 368.85 and 91.88

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Solution

The fourth proportional to 245.94, 368.85 and 91.88 is: 137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.94 : 368.85 = 91.88 : x
  2. Step 2: Convert to fraction form
    245.94/368.85 = 91.88/x
  3. Step 3: Cross multiply
    245.94x = 368.85 × 91.88
  4. Step 4: Simplify right side
    245.94x = 33,889.94
  5. Step 5: Solve for x
    x = 33,889.94/245.94
  6. Step 6: Final answer
    x = 137.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.