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Finding the Fourth Proportional to 564.75, 779.16 and 328.65

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Solution

The fourth proportional to 564.75, 779.16 and 328.65 is: 453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.75 : 779.16 = 328.65 : x
  2. Step 2: Convert to fraction form
    564.75/779.16 = 328.65/x
  3. Step 3: Cross multiply
    564.75x = 779.16 × 328.65
  4. Step 4: Simplify right side
    564.75x = 256,070.93
  5. Step 5: Solve for x
    x = 256,070.93/564.75
  6. Step 6: Final answer
    x = 453.42

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Find fourth proportional to 282.38, 389.58 and 164.33
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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.