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Finding the Fourth Proportional to 846.59, 1,269.89 and 298.71

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Solution

The fourth proportional to 846.59, 1,269.89 and 298.71 is: 448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.59 : 1,269.89 = 298.71 : x
  2. Step 2: Convert to fraction form
    846.59/1,269.89 = 298.71/x
  3. Step 3: Cross multiply
    846.59x = 1,269.89 × 298.71
  4. Step 4: Simplify right side
    846.59x = 379,328.84
  5. Step 5: Solve for x
    x = 379,328.84/846.59
  6. Step 6: Final answer
    x = 448.07

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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.