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Finding the Fourth Proportional to 245.84, 339.90 and 190.55

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Solution

The fourth proportional to 245.84, 339.90 and 190.55 is: 263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.84 : 339.90 = 190.55 : x
  2. Step 2: Convert to fraction form
    245.84/339.90 = 190.55/x
  3. Step 3: Cross multiply
    245.84x = 339.90 × 190.55
  4. Step 4: Simplify right side
    245.84x = 64,768.08
  5. Step 5: Solve for x
    x = 64,768.08/245.84
  6. Step 6: Final answer
    x = 263.46

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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.