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Finding the Fourth Proportional to 846.16, 1,269.06 and 269.20

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Solution

The fourth proportional to 846.16, 1,269.06 and 269.20 is: 403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.16 : 1,269.06 = 269.20 : x
  2. Step 2: Convert to fraction form
    846.16/1,269.06 = 269.20/x
  3. Step 3: Cross multiply
    846.16x = 1,269.06 × 269.20
  4. Step 4: Simplify right side
    846.16x = 341,630.95
  5. Step 5: Solve for x
    x = 341,630.95/846.16
  6. Step 6: Final answer
    x = 403.74

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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.