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Finding the Fourth Proportional to 245.66, 368.89 and 164.45

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Solution

The fourth proportional to 245.66, 368.89 and 164.45 is: 246.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.66 : 368.89 = 164.45 : x
  2. Step 2: Convert to fraction form
    245.66/368.89 = 164.45/x
  3. Step 3: Cross multiply
    245.66x = 368.89 × 164.45
  4. Step 4: Simplify right side
    245.66x = 60,664.47
  5. Step 5: Solve for x
    x = 60,664.47/245.66
  6. Step 6: Final answer
    x = 246.95

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Why These Related Problems?

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