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Finding the Fourth Proportional to 606.24, 836.64 and 385.25

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Solution

The fourth proportional to 606.24, 836.64 and 385.25 is: 531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.24 : 836.64 = 385.25 : x
  2. Step 2: Convert to fraction form
    606.24/836.64 = 385.25/x
  3. Step 3: Cross multiply
    606.24x = 836.64 × 385.25
  4. Step 4: Simplify right side
    606.24x = 322,311.38
  5. Step 5: Solve for x
    x = 322,311.38/606.24
  6. Step 6: Final answer
    x = 531.66

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1.5x scale

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.