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Finding the Fourth Proportional to 565.16, 779.87 and 368.64

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Solution

The fourth proportional to 565.16, 779.87 and 368.64 is: 508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.16 : 779.87 = 368.64 : x
  2. Step 2: Convert to fraction form
    565.16/779.87 = 368.64/x
  3. Step 3: Cross multiply
    565.16x = 779.87 × 368.64
  4. Step 4: Simplify right side
    565.16x = 287,489.43
  5. Step 5: Solve for x
    x = 287,489.43/565.16
  6. Step 6: Final answer
    x = 508.69

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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.