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Finding the Fourth Proportional to 473.79, 653.84 and 261.09

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Solution

The fourth proportional to 473.79, 653.84 and 261.09 is: 360.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.79 : 653.84 = 261.09 : x
  2. Step 2: Convert to fraction form
    473.79/653.84 = 261.09/x
  3. Step 3: Cross multiply
    473.79x = 653.84 × 261.09
  4. Step 4: Simplify right side
    473.79x = 170,709.78
  5. Step 5: Solve for x
    x = 170,709.78/473.79
  6. Step 6: Final answer
    x = 360.31

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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.