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Finding the Fourth Proportional to 358.82, 494.97 and 260.40

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Solution

The fourth proportional to 358.82, 494.97 and 260.40 is: 359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.82 : 494.97 = 260.40 : x
  2. Step 2: Convert to fraction form
    358.82/494.97 = 260.40/x
  3. Step 3: Cross multiply
    358.82x = 494.97 × 260.40
  4. Step 4: Simplify right side
    358.82x = 128,890.19
  5. Step 5: Solve for x
    x = 128,890.19/358.82
  6. Step 6: Final answer
    x = 359.21

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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.