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Finding the Fourth Proportional to 1,145.42, 1,718.24 and 625.20

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Solution

The fourth proportional to 1,145.42, 1,718.24 and 625.20 is: 937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.42 : 1,718.24 = 625.20 : x
  2. Step 2: Convert to fraction form
    1,145.42/1,718.24 = 625.20/x
  3. Step 3: Cross multiply
    1,145.42x = 1,718.24 × 625.20
  4. Step 4: Simplify right side
    1,145.42x = 1,074,240.52
  5. Step 5: Solve for x
    x = 1,074,240.52/1,145.42
  6. Step 6: Final answer
    x = 937.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.