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Finding the Fourth Proportional to 1,104.16, 1,523.22 and 638.14

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Solution

The fourth proportional to 1,104.16, 1,523.22 and 638.14 is: 880.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.16 : 1,523.22 = 638.14 : x
  2. Step 2: Convert to fraction form
    1,104.16/1,523.22 = 638.14/x
  3. Step 3: Cross multiply
    1,104.16x = 1,523.22 × 638.14
  4. Step 4: Simplify right side
    1,104.16x = 972,027.61
  5. Step 5: Solve for x
    x = 972,027.61/1,104.16
  6. Step 6: Final answer
    x = 880.33

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1.5x scale

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.