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Finding the Fourth Proportional to 245.40, 368.55 and 194.55

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Solution

The fourth proportional to 245.40, 368.55 and 194.55 is: 292.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.40 : 368.55 = 194.55 : x
  2. Step 2: Convert to fraction form
    245.40/368.55 = 194.55/x
  3. Step 3: Cross multiply
    245.40x = 368.55 × 194.55
  4. Step 4: Simplify right side
    245.40x = 71,701.40
  5. Step 5: Solve for x
    x = 71,701.40/245.40
  6. Step 6: Final answer
    x = 292.18

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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.