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Finding the Fourth Proportional to 514.75, 710.37 and 281.89

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Solution

The fourth proportional to 514.75, 710.37 and 281.89 is: 389.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.75 : 710.37 = 281.89 : x
  2. Step 2: Convert to fraction form
    514.75/710.37 = 281.89/x
  3. Step 3: Cross multiply
    514.75x = 710.37 × 281.89
  4. Step 4: Simplify right side
    514.75x = 200,246.20
  5. Step 5: Solve for x
    x = 200,246.20/514.75
  6. Step 6: Final answer
    x = 389.02

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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.