Home / 1,513.50-2,270.30-417.86

Finding the Fourth Proportional to 1,513.50, 2,270.30 and 417.86

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Solution

The fourth proportional to 1,513.50, 2,270.30 and 417.86 is: 626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.50 : 2,270.30 = 417.86 : x
  2. Step 2: Convert to fraction form
    1,513.50/2,270.30 = 417.86/x
  3. Step 3: Cross multiply
    1,513.50x = 2,270.30 × 417.86
  4. Step 4: Simplify right side
    1,513.50x = 948,667.56
  5. Step 5: Solve for x
    x = 948,667.56/1,513.50
  6. Step 6: Final answer
    x = 626.80

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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.