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Finding the Fourth Proportional to 318.96, 476.03 and 310.76

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Solution

The fourth proportional to 318.96, 476.03 and 310.76 is: 463.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.96 : 476.03 = 310.76 : x
  2. Step 2: Convert to fraction form
    318.96/476.03 = 310.76/x
  3. Step 3: Cross multiply
    318.96x = 476.03 × 310.76
  4. Step 4: Simplify right side
    318.96x = 147,927.15
  5. Step 5: Solve for x
    x = 147,927.15/318.96
  6. Step 6: Final answer
    x = 463.78

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