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Finding the Fourth Proportional to 259.58, 358.25 and 149.12

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Solution

The fourth proportional to 259.58, 358.25 and 149.12 is: 205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.58 : 358.25 = 149.12 : x
  2. Step 2: Convert to fraction form
    259.58/358.25 = 149.12/x
  3. Step 3: Cross multiply
    259.58x = 358.25 × 149.12
  4. Step 4: Simplify right side
    259.58x = 53,421.49
  5. Step 5: Solve for x
    x = 53,421.49/259.58
  6. Step 6: Final answer
    x = 205.80

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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.