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Finding the Fourth Proportional to 1,513.62, 2,270.57 and 417.99

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Solution

The fourth proportional to 1,513.62, 2,270.57 and 417.99 is: 627.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.62 : 2,270.57 = 417.99 : x
  2. Step 2: Convert to fraction form
    1,513.62/2,270.57 = 417.99/x
  3. Step 3: Cross multiply
    1,513.62x = 2,270.57 × 417.99
  4. Step 4: Simplify right side
    1,513.62x = 949,081.98
  5. Step 5: Solve for x
    x = 949,081.98/1,513.62
  6. Step 6: Final answer
    x = 627.03

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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.