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Finding the Fourth Proportional to 307.26, 458.19 and 260.82

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Solution

The fourth proportional to 307.26, 458.19 and 260.82 is: 388.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.26 : 458.19 = 260.82 : x
  2. Step 2: Convert to fraction form
    307.26/458.19 = 260.82/x
  3. Step 3: Cross multiply
    307.26x = 458.19 × 260.82
  4. Step 4: Simplify right side
    307.26x = 119,505.12
  5. Step 5: Solve for x
    x = 119,505.12/307.26
  6. Step 6: Final answer
    x = 388.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.