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Finding the Fourth Proportional to 1,054.08, 1,581.08 and 623.97

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Solution

The fourth proportional to 1,054.08, 1,581.08 and 623.97 is: 935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.08 : 1,581.08 = 623.97 : x
  2. Step 2: Convert to fraction form
    1,054.08/1,581.08 = 623.97/x
  3. Step 3: Cross multiply
    1,054.08x = 1,581.08 × 623.97
  4. Step 4: Simplify right side
    1,054.08x = 986,543.37
  5. Step 5: Solve for x
    x = 986,543.37/1,054.08
  6. Step 6: Final answer
    x = 935.93

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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.