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Finding the Fourth Proportional to 1,372.05, 2,058.35 and 549.99

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Solution

The fourth proportional to 1,372.05, 2,058.35 and 549.99 is: 825.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.05 : 2,058.35 = 549.99 : x
  2. Step 2: Convert to fraction form
    1,372.05/2,058.35 = 549.99/x
  3. Step 3: Cross multiply
    1,372.05x = 2,058.35 × 549.99
  4. Step 4: Simplify right side
    1,372.05x = 1,132,069.17
  5. Step 5: Solve for x
    x = 1,132,069.17/1,372.05
  6. Step 6: Final answer
    x = 825.09

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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.