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Finding the Fourth Proportional to 1,376.24, 2,064.86 and 554.75

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Solution

The fourth proportional to 1,376.24, 2,064.86 and 554.75 is: 832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.24 : 2,064.86 = 554.75 : x
  2. Step 2: Convert to fraction form
    1,376.24/2,064.86 = 554.75/x
  3. Step 3: Cross multiply
    1,376.24x = 2,064.86 × 554.75
  4. Step 4: Simplify right side
    1,376.24x = 1,145,472.15
  5. Step 5: Solve for x
    x = 1,145,472.15/1,376.24
  6. Step 6: Final answer
    x = 832.32

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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.