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Finding the Fourth Proportional to 564.95, 779.79 and 328.95

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Solution

The fourth proportional to 564.95, 779.79 and 328.95 is: 454.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.95 : 779.79 = 328.95 : x
  2. Step 2: Convert to fraction form
    564.95/779.79 = 328.95/x
  3. Step 3: Cross multiply
    564.95x = 779.79 × 328.95
  4. Step 4: Simplify right side
    564.95x = 256,511.92
  5. Step 5: Solve for x
    x = 256,511.92/564.95
  6. Step 6: Final answer
    x = 454.04

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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.