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Finding the Fourth Proportional to 675.54, 930.69 and 564.57

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Solution

The fourth proportional to 675.54, 930.69 and 564.57 is: 777.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.54 : 930.69 = 564.57 : x
  2. Step 2: Convert to fraction form
    675.54/930.69 = 564.57/x
  3. Step 3: Cross multiply
    675.54x = 930.69 × 564.57
  4. Step 4: Simplify right side
    675.54x = 525,439.65
  5. Step 5: Solve for x
    x = 525,439.65/675.54
  6. Step 6: Final answer
    x = 777.81

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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.