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Finding the Fourth Proportional to 1,246.52, 1,867.64 and 880.70

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Solution

The fourth proportional to 1,246.52, 1,867.64 and 880.70 is: 1,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.52 : 1,867.64 = 880.70 : x
  2. Step 2: Convert to fraction form
    1,246.52/1,867.64 = 880.70/x
  3. Step 3: Cross multiply
    1,246.52x = 1,867.64 × 880.70
  4. Step 4: Simplify right side
    1,246.52x = 1,644,830.55
  5. Step 5: Solve for x
    x = 1,644,830.55/1,246.52
  6. Step 6: Final answer
    x = 1,319.54

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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.