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Finding the Fourth Proportional to 1,276.60, 1,758.02 and 882.94

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Solution

The fourth proportional to 1,276.60, 1,758.02 and 882.94 is: 1,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.60 : 1,758.02 = 882.94 : x
  2. Step 2: Convert to fraction form
    1,276.60/1,758.02 = 882.94/x
  3. Step 3: Cross multiply
    1,276.60x = 1,758.02 × 882.94
  4. Step 4: Simplify right side
    1,276.60x = 1,552,226.18
  5. Step 5: Solve for x
    x = 1,552,226.18/1,276.60
  6. Step 6: Final answer
    x = 1,215.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.