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Finding the Fourth Proportional to 518.04, 714.88 and 281.99

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Solution

The fourth proportional to 518.04, 714.88 and 281.99 is: 389.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.04 : 714.88 = 281.99 : x
  2. Step 2: Convert to fraction form
    518.04/714.88 = 281.99/x
  3. Step 3: Cross multiply
    518.04x = 714.88 × 281.99
  4. Step 4: Simplify right side
    518.04x = 201,584.73
  5. Step 5: Solve for x
    x = 201,584.73/518.04
  6. Step 6: Final answer
    x = 389.13

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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.