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Finding the Fourth Proportional to 245.00, 340.45 and 242.51

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Solution

The fourth proportional to 245.00, 340.45 and 242.51 is: 336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.00 : 340.45 = 242.51 : x
  2. Step 2: Convert to fraction form
    245.00/340.45 = 242.51/x
  3. Step 3: Cross multiply
    245.00x = 340.45 × 242.51
  4. Step 4: Simplify right side
    245.00x = 82,560.22
  5. Step 5: Solve for x
    x = 82,560.22/245.00
  6. Step 6: Final answer
    x = 336.98

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.