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Finding the Fourth Proportional to 1,574.73, 2,360.57 and 752.78

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Solution

The fourth proportional to 1,574.73, 2,360.57 and 752.78 is: 1,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.73 : 2,360.57 = 752.78 : x
  2. Step 2: Convert to fraction form
    1,574.73/2,360.57 = 752.78/x
  3. Step 3: Cross multiply
    1,574.73x = 2,360.57 × 752.78
  4. Step 4: Simplify right side
    1,574.73x = 1,776,992.02
  5. Step 5: Solve for x
    x = 1,776,992.02/1,574.73
  6. Step 6: Final answer
    x = 1,128.44

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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.