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Finding the Fourth Proportional to 415.19, 625.70 and 374.11

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Solution

The fourth proportional to 415.19, 625.70 and 374.11 is: 563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.19 : 625.70 = 374.11 : x
  2. Step 2: Convert to fraction form
    415.19/625.70 = 374.11/x
  3. Step 3: Cross multiply
    415.19x = 625.70 × 374.11
  4. Step 4: Simplify right side
    415.19x = 234,080.63
  5. Step 5: Solve for x
    x = 234,080.63/415.19
  6. Step 6: Final answer
    x = 563.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.