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Finding the Fourth Proportional to 369.30, 551.58 and 318.12

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Solution

The fourth proportional to 369.30, 551.58 and 318.12 is: 475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.30 : 551.58 = 318.12 : x
  2. Step 2: Convert to fraction form
    369.30/551.58 = 318.12/x
  3. Step 3: Cross multiply
    369.30x = 551.58 × 318.12
  4. Step 4: Simplify right side
    369.30x = 175,468.63
  5. Step 5: Solve for x
    x = 175,468.63/369.30
  6. Step 6: Final answer
    x = 475.14

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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.