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Finding the Fourth Proportional to 245.58, 368.46 and 217.95

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Solution

The fourth proportional to 245.58, 368.46 and 217.95 is: 327.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.58 : 368.46 = 217.95 : x
  2. Step 2: Convert to fraction form
    245.58/368.46 = 217.95/x
  3. Step 3: Cross multiply
    245.58x = 368.46 × 217.95
  4. Step 4: Simplify right side
    245.58x = 80,305.86
  5. Step 5: Solve for x
    x = 80,305.86/245.58
  6. Step 6: Final answer
    x = 327.00

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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.