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Finding the Fourth Proportional to 1,758.44, 2,637.80 and 718.50

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Solution

The fourth proportional to 1,758.44, 2,637.80 and 718.50 is: 1,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.44 : 2,637.80 = 718.50 : x
  2. Step 2: Convert to fraction form
    1,758.44/2,637.80 = 718.50/x
  3. Step 3: Cross multiply
    1,758.44x = 2,637.80 × 718.50
  4. Step 4: Simplify right side
    1,758.44x = 1,895,259.30
  5. Step 5: Solve for x
    x = 1,895,259.30/1,758.44
  6. Step 6: Final answer
    x = 1,077.81

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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.