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Finding the Fourth Proportional to 561.80, 774.31 and 375.00

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Solution

The fourth proportional to 561.80, 774.31 and 375.00 is: 516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.80 : 774.31 = 375.00 : x
  2. Step 2: Convert to fraction form
    561.80/774.31 = 375.00/x
  3. Step 3: Cross multiply
    561.80x = 774.31 × 375.00
  4. Step 4: Simplify right side
    561.80x = 290,363.11
  5. Step 5: Solve for x
    x = 290,363.11/561.80
  6. Step 6: Final answer
    x = 516.84

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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.