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Finding the Fourth Proportional to 656.84, 906.42 and 377.09

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Solution

The fourth proportional to 656.84, 906.42 and 377.09 is: 520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.84 : 906.42 = 377.09 : x
  2. Step 2: Convert to fraction form
    656.84/906.42 = 377.09/x
  3. Step 3: Cross multiply
    656.84x = 906.42 × 377.09
  4. Step 4: Simplify right side
    656.84x = 341,802.20
  5. Step 5: Solve for x
    x = 341,802.20/656.84
  6. Step 6: Final answer
    x = 520.37

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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.