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Finding the Fourth Proportional to 473.36, 653.20 and 276.84

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Solution

The fourth proportional to 473.36, 653.20 and 276.84 is: 382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.36 : 653.20 = 276.84 : x
  2. Step 2: Convert to fraction form
    473.36/653.20 = 276.84/x
  3. Step 3: Cross multiply
    473.36x = 653.20 × 276.84
  4. Step 4: Simplify right side
    473.36x = 180,831.89
  5. Step 5: Solve for x
    x = 180,831.89/473.36
  6. Step 6: Final answer
    x = 382.02

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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.