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Finding the Fourth Proportional to 302.45, 416.34 and 260.73

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Solution

The fourth proportional to 302.45, 416.34 and 260.73 is: 358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.45 : 416.34 = 260.73 : x
  2. Step 2: Convert to fraction form
    302.45/416.34 = 260.73/x
  3. Step 3: Cross multiply
    302.45x = 416.34 × 260.73
  4. Step 4: Simplify right side
    302.45x = 108,552.33
  5. Step 5: Solve for x
    x = 108,552.33/302.45
  6. Step 6: Final answer
    x = 358.92

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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.