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Finding the Fourth Proportional to 1,356.41, 1,871.84 and 735.41

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Solution

The fourth proportional to 1,356.41, 1,871.84 and 735.41 is: 1,014.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.41 : 1,871.84 = 735.41 : x
  2. Step 2: Convert to fraction form
    1,356.41/1,871.84 = 735.41/x
  3. Step 3: Cross multiply
    1,356.41x = 1,871.84 × 735.41
  4. Step 4: Simplify right side
    1,356.41x = 1,376,564.67
  5. Step 5: Solve for x
    x = 1,376,564.67/1,356.41
  6. Step 6: Final answer
    x = 1,014.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.