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Finding the Fourth Proportional to 563.10, 777.05 and 326.89

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Solution

The fourth proportional to 563.10, 777.05 and 326.89 is: 451.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.10 : 777.05 = 326.89 : x
  2. Step 2: Convert to fraction form
    563.10/777.05 = 326.89/x
  3. Step 3: Cross multiply
    563.10x = 777.05 × 326.89
  4. Step 4: Simplify right side
    563.10x = 254,009.87
  5. Step 5: Solve for x
    x = 254,009.87/563.10
  6. Step 6: Final answer
    x = 451.09

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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.