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Finding the Fourth Proportional to 1,260.97, 1,890.57 and 529.94

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Solution

The fourth proportional to 1,260.97, 1,890.57 and 529.94 is: 794.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.97 : 1,890.57 = 529.94 : x
  2. Step 2: Convert to fraction form
    1,260.97/1,890.57 = 529.94/x
  3. Step 3: Cross multiply
    1,260.97x = 1,890.57 × 529.94
  4. Step 4: Simplify right side
    1,260.97x = 1,001,895.38
  5. Step 5: Solve for x
    x = 1,001,895.38/1,260.97
  6. Step 6: Final answer
    x = 794.54

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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.