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Finding the Fourth Proportional to 473.44, 653.06 and 286.78

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Solution

The fourth proportional to 473.44, 653.06 and 286.78 is: 395.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.44 : 653.06 = 286.78 : x
  2. Step 2: Convert to fraction form
    473.44/653.06 = 286.78/x
  3. Step 3: Cross multiply
    473.44x = 653.06 × 286.78
  4. Step 4: Simplify right side
    473.44x = 187,284.55
  5. Step 5: Solve for x
    x = 187,284.55/473.44
  6. Step 6: Final answer
    x = 395.58

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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.