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Finding the Fourth Proportional to 474.77, 655.35 and 300.08

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Solution

The fourth proportional to 474.77, 655.35 and 300.08 is: 414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.77 : 655.35 = 300.08 : x
  2. Step 2: Convert to fraction form
    474.77/655.35 = 300.08/x
  3. Step 3: Cross multiply
    474.77x = 655.35 × 300.08
  4. Step 4: Simplify right side
    474.77x = 196,654.15
  5. Step 5: Solve for x
    x = 196,654.15/474.77
  6. Step 6: Final answer
    x = 414.21

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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.