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Finding the Fourth Proportional to 1,071.82, 1,607.78 and 341.45

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Solution

The fourth proportional to 1,071.82, 1,607.78 and 341.45 is: 512.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.82 : 1,607.78 = 341.45 : x
  2. Step 2: Convert to fraction form
    1,071.82/1,607.78 = 341.45/x
  3. Step 3: Cross multiply
    1,071.82x = 1,607.78 × 341.45
  4. Step 4: Simplify right side
    1,071.82x = 548,976.48
  5. Step 5: Solve for x
    x = 548,976.48/1,071.82
  6. Step 6: Final answer
    x = 512.19

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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.