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Finding the Fourth Proportional to 374.58, 557.21 and 370.64

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Solution

The fourth proportional to 374.58, 557.21 and 370.64 is: 551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.58 : 557.21 = 370.64 : x
  2. Step 2: Convert to fraction form
    374.58/557.21 = 370.64/x
  3. Step 3: Cross multiply
    374.58x = 557.21 × 370.64
  4. Step 4: Simplify right side
    374.58x = 206,519.68
  5. Step 5: Solve for x
    x = 206,519.68/374.58
  6. Step 6: Final answer
    x = 551.34

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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.