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Finding the Fourth Proportional to 1,513.34, 2,270.14 and 417.71

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Solution

The fourth proportional to 1,513.34, 2,270.14 and 417.71 is: 626.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.34 : 2,270.14 = 417.71 : x
  2. Step 2: Convert to fraction form
    1,513.34/2,270.14 = 417.71/x
  3. Step 3: Cross multiply
    1,513.34x = 2,270.14 × 417.71
  4. Step 4: Simplify right side
    1,513.34x = 948,247.26
  5. Step 5: Solve for x
    x = 948,247.26/1,513.34
  6. Step 6: Final answer
    x = 626.59

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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.