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Finding the Fourth Proportional to 554.57, 765.62 and 368.31

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Solution

The fourth proportional to 554.57, 765.62 and 368.31 is: 508.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.57 : 765.62 = 368.31 : x
  2. Step 2: Convert to fraction form
    554.57/765.62 = 368.31/x
  3. Step 3: Cross multiply
    554.57x = 765.62 × 368.31
  4. Step 4: Simplify right side
    554.57x = 281,985.50
  5. Step 5: Solve for x
    x = 281,985.50/554.57
  6. Step 6: Final answer
    x = 508.48

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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.