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Finding the Fourth Proportional to 473.96, 653.92 and 287.56

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Solution

The fourth proportional to 473.96, 653.92 and 287.56 is: 396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.96 : 653.92 = 287.56 : x
  2. Step 2: Convert to fraction form
    473.96/653.92 = 287.56/x
  3. Step 3: Cross multiply
    473.96x = 653.92 × 287.56
  4. Step 4: Simplify right side
    473.96x = 188,041.24
  5. Step 5: Solve for x
    x = 188,041.24/473.96
  6. Step 6: Final answer
    x = 396.74

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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.