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Finding the Fourth Proportional to 607.18, 909.75 and 281.97

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Solution

The fourth proportional to 607.18, 909.75 and 281.97 is: 422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.18 : 909.75 = 281.97 : x
  2. Step 2: Convert to fraction form
    607.18/909.75 = 281.97/x
  3. Step 3: Cross multiply
    607.18x = 909.75 × 281.97
  4. Step 4: Simplify right side
    607.18x = 256,522.21
  5. Step 5: Solve for x
    x = 256,522.21/607.18
  6. Step 6: Final answer
    x = 422.48

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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.