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Finding the Fourth Proportional to 328.00, 451.66 and 283.66

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Solution

The fourth proportional to 328.00, 451.66 and 283.66 is: 390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.00 : 451.66 = 283.66 : x
  2. Step 2: Convert to fraction form
    328.00/451.66 = 283.66/x
  3. Step 3: Cross multiply
    328.00x = 451.66 × 283.66
  4. Step 4: Simplify right side
    328.00x = 128,119.92
  5. Step 5: Solve for x
    x = 128,119.92/328.00
  6. Step 6: Final answer
    x = 390.61

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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.