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Finding the Fourth Proportional to 566.28, 781.46 and 330.39

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Solution

The fourth proportional to 566.28, 781.46 and 330.39 is: 455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.28 : 781.46 = 330.39 : x
  2. Step 2: Convert to fraction form
    566.28/781.46 = 330.39/x
  3. Step 3: Cross multiply
    566.28x = 781.46 × 330.39
  4. Step 4: Simplify right side
    566.28x = 258,182.66
  5. Step 5: Solve for x
    x = 258,182.66/566.28
  6. Step 6: Final answer
    x = 455.93

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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.