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Finding the Fourth Proportional to 370.57, 555.39 and 267.31

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Solution

The fourth proportional to 370.57, 555.39 and 267.31 is: 400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.57 : 555.39 = 267.31 : x
  2. Step 2: Convert to fraction form
    370.57/555.39 = 267.31/x
  3. Step 3: Cross multiply
    370.57x = 555.39 × 267.31
  4. Step 4: Simplify right side
    370.57x = 148,461.30
  5. Step 5: Solve for x
    x = 148,461.30/370.57
  6. Step 6: Final answer
    x = 400.63

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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.