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Finding the Fourth Proportional to 578.30, 798.27 and 368.63

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Solution

The fourth proportional to 578.30, 798.27 and 368.63 is: 508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.30 : 798.27 = 368.63 : x
  2. Step 2: Convert to fraction form
    578.30/798.27 = 368.63/x
  3. Step 3: Cross multiply
    578.30x = 798.27 × 368.63
  4. Step 4: Simplify right side
    578.30x = 294,266.27
  5. Step 5: Solve for x
    x = 294,266.27/578.30
  6. Step 6: Final answer
    x = 508.85

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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.