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Finding the Fourth Proportional to 562.89, 776.92 and 330.09

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Solution

The fourth proportional to 562.89, 776.92 and 330.09 is: 455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.89 : 776.92 = 330.09 : x
  2. Step 2: Convert to fraction form
    562.89/776.92 = 330.09/x
  3. Step 3: Cross multiply
    562.89x = 776.92 × 330.09
  4. Step 4: Simplify right side
    562.89x = 256,455.88
  5. Step 5: Solve for x
    x = 256,455.88/562.89
  6. Step 6: Final answer
    x = 455.60

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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.