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Finding the Fourth Proportional to 564.41, 779.17 and 354.89

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Solution

The fourth proportional to 564.41, 779.17 and 354.89 is: 489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.41 : 779.17 = 354.89 : x
  2. Step 2: Convert to fraction form
    564.41/779.17 = 354.89/x
  3. Step 3: Cross multiply
    564.41x = 779.17 × 354.89
  4. Step 4: Simplify right side
    564.41x = 276,521.37
  5. Step 5: Solve for x
    x = 276,521.37/564.41
  6. Step 6: Final answer
    x = 489.93

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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.