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Finding the Fourth Proportional to 518.04, 714.33 and 386.82

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Solution

The fourth proportional to 518.04, 714.33 and 386.82 is: 533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.04 : 714.33 = 386.82 : x
  2. Step 2: Convert to fraction form
    518.04/714.33 = 386.82/x
  3. Step 3: Cross multiply
    518.04x = 714.33 × 386.82
  4. Step 4: Simplify right side
    518.04x = 276,317.13
  5. Step 5: Solve for x
    x = 276,317.13/518.04
  6. Step 6: Final answer
    x = 533.39

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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.