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Finding the Fourth Proportional to 1,141.95, 1,712.92 and 276.27

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Solution

The fourth proportional to 1,141.95, 1,712.92 and 276.27 is: 414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.95 : 1,712.92 = 276.27 : x
  2. Step 2: Convert to fraction form
    1,141.95/1,712.92 = 276.27/x
  3. Step 3: Cross multiply
    1,141.95x = 1,712.92 × 276.27
  4. Step 4: Simplify right side
    1,141.95x = 473,219.84
  5. Step 5: Solve for x
    x = 473,219.84/1,141.95
  6. Step 6: Final answer
    x = 414.40

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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.