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Finding the Fourth Proportional to 245.26, 369.43 and 207.60

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Solution

The fourth proportional to 245.26, 369.43 and 207.60 is: 312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.26 : 369.43 = 207.60 : x
  2. Step 2: Convert to fraction form
    245.26/369.43 = 207.60/x
  3. Step 3: Cross multiply
    245.26x = 369.43 × 207.60
  4. Step 4: Simplify right side
    245.26x = 76,693.67
  5. Step 5: Solve for x
    x = 76,693.67/245.26
  6. Step 6: Final answer
    x = 312.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.