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Finding the Fourth Proportional to 566.79, 782.27 and 330.78

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Solution

The fourth proportional to 566.79, 782.27 and 330.78 is: 456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.79 : 782.27 = 330.78 : x
  2. Step 2: Convert to fraction form
    566.79/782.27 = 330.78/x
  3. Step 3: Cross multiply
    566.79x = 782.27 × 330.78
  4. Step 4: Simplify right side
    566.79x = 258,753.71
  5. Step 5: Solve for x
    x = 258,753.71/566.79
  6. Step 6: Final answer
    x = 456.52

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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.