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Finding the Fourth Proportional to 606.28, 909.09 and 259.51

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Solution

The fourth proportional to 606.28, 909.09 and 259.51 is: 389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.28 : 909.09 = 259.51 : x
  2. Step 2: Convert to fraction form
    606.28/909.09 = 259.51/x
  3. Step 3: Cross multiply
    606.28x = 909.09 × 259.51
  4. Step 4: Simplify right side
    606.28x = 235,917.95
  5. Step 5: Solve for x
    x = 235,917.95/606.28
  6. Step 6: Final answer
    x = 389.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.