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Finding the Fourth Proportional to 564.66, 779.49 and 368.28

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Solution

The fourth proportional to 564.66, 779.49 and 368.28 is: 508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.66 : 779.49 = 368.28 : x
  2. Step 2: Convert to fraction form
    564.66/779.49 = 368.28/x
  3. Step 3: Cross multiply
    564.66x = 779.49 × 368.28
  4. Step 4: Simplify right side
    564.66x = 287,070.58
  5. Step 5: Solve for x
    x = 287,070.58/564.66
  6. Step 6: Final answer
    x = 508.40

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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.