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Finding the Fourth Proportional to 310.18, 463.89 and 281.47

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Solution

The fourth proportional to 310.18, 463.89 and 281.47 is: 420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.18 : 463.89 = 281.47 : x
  2. Step 2: Convert to fraction form
    310.18/463.89 = 281.47/x
  3. Step 3: Cross multiply
    310.18x = 463.89 × 281.47
  4. Step 4: Simplify right side
    310.18x = 130,571.12
  5. Step 5: Solve for x
    x = 130,571.12/310.18
  6. Step 6: Final answer
    x = 420.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.