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Finding the Fourth Proportional to 2,165.64, 3,248.45 and 522.18

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Solution

The fourth proportional to 2,165.64, 3,248.45 and 522.18 is: 783.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.64 : 3,248.45 = 522.18 : x
  2. Step 2: Convert to fraction form
    2,165.64/3,248.45 = 522.18/x
  3. Step 3: Cross multiply
    2,165.64x = 3,248.45 × 522.18
  4. Step 4: Simplify right side
    2,165.64x = 1,696,273.01
  5. Step 5: Solve for x
    x = 1,696,273.01/2,165.64
  6. Step 6: Final answer
    x = 783.27

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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.