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Finding the Fourth Proportional to 562.65, 776.34 and 329.78

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Solution

The fourth proportional to 562.65, 776.34 and 329.78 is: 455.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.65 : 776.34 = 329.78 : x
  2. Step 2: Convert to fraction form
    562.65/776.34 = 329.78/x
  3. Step 3: Cross multiply
    562.65x = 776.34 × 329.78
  4. Step 4: Simplify right side
    562.65x = 256,021.41
  5. Step 5: Solve for x
    x = 256,021.41/562.65
  6. Step 6: Final answer
    x = 455.03

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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.