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Finding the Fourth Proportional to 1,758.40, 2,637.61 and 662.18

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Solution

The fourth proportional to 1,758.40, 2,637.61 and 662.18 is: 993.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.40 : 2,637.61 = 662.18 : x
  2. Step 2: Convert to fraction form
    1,758.40/2,637.61 = 662.18/x
  3. Step 3: Cross multiply
    1,758.40x = 2,637.61 × 662.18
  4. Step 4: Simplify right side
    1,758.40x = 1,746,557.75
  5. Step 5: Solve for x
    x = 1,746,557.75/1,758.40
  6. Step 6: Final answer
    x = 993.27

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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.