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Finding the Fourth Proportional to 1,966.78, 2,950.57 and 580.00

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Solution

The fourth proportional to 1,966.78, 2,950.57 and 580.00 is: 870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.78 : 2,950.57 = 580.00 : x
  2. Step 2: Convert to fraction form
    1,966.78/2,950.57 = 580.00/x
  3. Step 3: Cross multiply
    1,966.78x = 2,950.57 × 580.00
  4. Step 4: Simplify right side
    1,966.78x = 1,711,315.85
  5. Step 5: Solve for x
    x = 1,711,315.85/1,966.78
  6. Step 6: Final answer
    x = 870.11

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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.