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Finding the Fourth Proportional to 2,165.53, 3,248.11 and 605.40

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Solution

The fourth proportional to 2,165.53, 3,248.11 and 605.40 is: 908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.53 : 3,248.11 = 605.40 : x
  2. Step 2: Convert to fraction form
    2,165.53/3,248.11 = 605.40/x
  3. Step 3: Cross multiply
    2,165.53x = 3,248.11 × 605.40
  4. Step 4: Simplify right side
    2,165.53x = 1,966,404.28
  5. Step 5: Solve for x
    x = 1,966,404.28/2,165.53
  6. Step 6: Final answer
    x = 908.05

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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.