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Finding the Fourth Proportional to 1,455.49, 2,182.02 and 906.45

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Solution

The fourth proportional to 1,455.49, 2,182.02 and 906.45 is: 1,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.49 : 2,182.02 = 906.45 : x
  2. Step 2: Convert to fraction form
    1,455.49/2,182.02 = 906.45/x
  3. Step 3: Cross multiply
    1,455.49x = 2,182.02 × 906.45
  4. Step 4: Simplify right side
    1,455.49x = 1,977,892.03
  5. Step 5: Solve for x
    x = 1,977,892.03/1,455.49
  6. Step 6: Final answer
    x = 1,358.92

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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.