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Finding the Fourth Proportional to 607.95, 911.21 and 282.65

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Solution

The fourth proportional to 607.95, 911.21 and 282.65 is: 423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.95 : 911.21 = 282.65 : x
  2. Step 2: Convert to fraction form
    607.95/911.21 = 282.65/x
  3. Step 3: Cross multiply
    607.95x = 911.21 × 282.65
  4. Step 4: Simplify right side
    607.95x = 257,547.54
  5. Step 5: Solve for x
    x = 257,547.54/607.95
  6. Step 6: Final answer
    x = 423.63

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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.