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Finding the Fourth Proportional to 1,295.93, 1,943.63 and 418.51

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Solution

The fourth proportional to 1,295.93, 1,943.63 and 418.51 is: 627.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.93 : 1,943.63 = 418.51 : x
  2. Step 2: Convert to fraction form
    1,295.93/1,943.63 = 418.51/x
  3. Step 3: Cross multiply
    1,295.93x = 1,943.63 × 418.51
  4. Step 4: Simplify right side
    1,295.93x = 813,430.50
  5. Step 5: Solve for x
    x = 813,430.50/1,295.93
  6. Step 6: Final answer
    x = 627.68

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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.