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Finding the Fourth Proportional to 417.30, 622.77 and 371.16

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Solution

The fourth proportional to 417.30, 622.77 and 371.16 is: 553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.30 : 622.77 = 371.16 : x
  2. Step 2: Convert to fraction form
    417.30/622.77 = 371.16/x
  3. Step 3: Cross multiply
    417.30x = 622.77 × 371.16
  4. Step 4: Simplify right side
    417.30x = 231,147.31
  5. Step 5: Solve for x
    x = 231,147.31/417.30
  6. Step 6: Final answer
    x = 553.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.