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Finding the Fourth Proportional to 606.26, 909.12 and 221.51

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Solution

The fourth proportional to 606.26, 909.12 and 221.51 is: 332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.26 : 909.12 = 221.51 : x
  2. Step 2: Convert to fraction form
    606.26/909.12 = 221.51/x
  3. Step 3: Cross multiply
    606.26x = 909.12 × 221.51
  4. Step 4: Simplify right side
    606.26x = 201,379.17
  5. Step 5: Solve for x
    x = 201,379.17/606.26
  6. Step 6: Final answer
    x = 332.17

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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.