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Finding the Fourth Proportional to 457.48, 687.66 and 330.04

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Solution

The fourth proportional to 457.48, 687.66 and 330.04 is: 496.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.48 : 687.66 = 330.04 : x
  2. Step 2: Convert to fraction form
    457.48/687.66 = 330.04/x
  3. Step 3: Cross multiply
    457.48x = 687.66 × 330.04
  4. Step 4: Simplify right side
    457.48x = 226,955.31
  5. Step 5: Solve for x
    x = 226,955.31/457.48
  6. Step 6: Final answer
    x = 496.10

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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.