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Finding the Fourth Proportional to 1,357.91, 2,035.94 and 627.08

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Solution

The fourth proportional to 1,357.91, 2,035.94 and 627.08 is: 940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.91 : 2,035.94 = 627.08 : x
  2. Step 2: Convert to fraction form
    1,357.91/2,035.94 = 627.08/x
  3. Step 3: Cross multiply
    1,357.91x = 2,035.94 × 627.08
  4. Step 4: Simplify right side
    1,357.91x = 1,276,697.26
  5. Step 5: Solve for x
    x = 1,276,697.26/1,357.91
  6. Step 6: Final answer
    x = 940.19

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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.