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Finding the Fourth Proportional to 514.71, 710.28 and 281.84

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Solution

The fourth proportional to 514.71, 710.28 and 281.84 is: 388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.71 : 710.28 = 281.84 : x
  2. Step 2: Convert to fraction form
    514.71/710.28 = 281.84/x
  3. Step 3: Cross multiply
    514.71x = 710.28 × 281.84
  4. Step 4: Simplify right side
    514.71x = 200,181.76
  5. Step 5: Solve for x
    x = 200,181.76/514.71
  6. Step 6: Final answer
    x = 388.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.