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Finding the Fourth Proportional to 551.17, 760.56 and 330.12

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Solution

The fourth proportional to 551.17, 760.56 and 330.12 is: 455.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.17 : 760.56 = 330.12 : x
  2. Step 2: Convert to fraction form
    551.17/760.56 = 330.12/x
  3. Step 3: Cross multiply
    551.17x = 760.56 × 330.12
  4. Step 4: Simplify right side
    551.17x = 251,073.22
  5. Step 5: Solve for x
    x = 251,073.22/551.17
  6. Step 6: Final answer
    x = 455.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.