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Finding the Fourth Proportional to 1,717.52, 2,576.97 and 621.99

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Solution

The fourth proportional to 1,717.52, 2,576.97 and 621.99 is: 933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.52 : 2,576.97 = 621.99 : x
  2. Step 2: Convert to fraction form
    1,717.52/2,576.97 = 621.99/x
  3. Step 3: Cross multiply
    1,717.52x = 2,576.97 × 621.99
  4. Step 4: Simplify right side
    1,717.52x = 1,602,849.57
  5. Step 5: Solve for x
    x = 1,602,849.57/1,717.52
  6. Step 6: Final answer
    x = 933.24

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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.