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Finding the Fourth Proportional to 606.74, 906.90 and 528.04

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Solution

The fourth proportional to 606.74, 906.90 and 528.04 is: 789.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.74 : 906.90 = 528.04 : x
  2. Step 2: Convert to fraction form
    606.74/906.90 = 528.04/x
  3. Step 3: Cross multiply
    606.74x = 906.90 × 528.04
  4. Step 4: Simplify right side
    606.74x = 478,881.18
  5. Step 5: Solve for x
    x = 478,881.18/606.74
  6. Step 6: Final answer
    x = 789.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.