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Finding the Fourth Proportional to 1,571.88, 2,357.82 and 417.63

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Solution

The fourth proportional to 1,571.88, 2,357.82 and 417.63 is: 626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.88 : 2,357.82 = 417.63 : x
  2. Step 2: Convert to fraction form
    1,571.88/2,357.82 = 417.63/x
  3. Step 3: Cross multiply
    1,571.88x = 2,357.82 × 417.63
  4. Step 4: Simplify right side
    1,571.88x = 984,696.37
  5. Step 5: Solve for x
    x = 984,696.37/1,571.88
  6. Step 6: Final answer
    x = 626.45

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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.