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Finding the Fourth Proportional to 245.47, 339.03 and 190.87

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Solution

The fourth proportional to 245.47, 339.03 and 190.87 is: 263.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.47 : 339.03 = 190.87 : x
  2. Step 2: Convert to fraction form
    245.47/339.03 = 190.87/x
  3. Step 3: Cross multiply
    245.47x = 339.03 × 190.87
  4. Step 4: Simplify right side
    245.47x = 64,710.66
  5. Step 5: Solve for x
    x = 64,710.66/245.47
  6. Step 6: Final answer
    x = 263.62

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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.