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Finding the Fourth Proportional to 1,758.42, 2,635.63 and 717.11

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Solution

The fourth proportional to 1,758.42, 2,635.63 and 717.11 is: 1,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.42 : 2,635.63 = 717.11 : x
  2. Step 2: Convert to fraction form
    1,758.42/2,635.63 = 717.11/x
  3. Step 3: Cross multiply
    1,758.42x = 2,635.63 × 717.11
  4. Step 4: Simplify right side
    1,758.42x = 1,890,036.63
  5. Step 5: Solve for x
    x = 1,890,036.63/1,758.42
  6. Step 6: Final answer
    x = 1,074.85

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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.