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Finding the Fourth Proportional to 456.87, 684.64 and 359.56

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Solution

The fourth proportional to 456.87, 684.64 and 359.56 is: 538.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.87 : 684.64 = 359.56 : x
  2. Step 2: Convert to fraction form
    456.87/684.64 = 359.56/x
  3. Step 3: Cross multiply
    456.87x = 684.64 × 359.56
  4. Step 4: Simplify right side
    456.87x = 246,170.46
  5. Step 5: Solve for x
    x = 246,170.46/456.87
  6. Step 6: Final answer
    x = 538.82

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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.