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Finding the Fourth Proportional to 370.11, 554.48 and 318.27

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Solution

The fourth proportional to 370.11, 554.48 and 318.27 is: 476.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.11 : 554.48 = 318.27 : x
  2. Step 2: Convert to fraction form
    370.11/554.48 = 318.27/x
  3. Step 3: Cross multiply
    370.11x = 554.48 × 318.27
  4. Step 4: Simplify right side
    370.11x = 176,474.35
  5. Step 5: Solve for x
    x = 176,474.35/370.11
  6. Step 6: Final answer
    x = 476.82

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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.