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Finding the Fourth Proportional to 578.04, 866.60 and 456.84

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Solution

The fourth proportional to 578.04, 866.60 and 456.84 is: 684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.04 : 866.60 = 456.84 : x
  2. Step 2: Convert to fraction form
    578.04/866.60 = 456.84/x
  3. Step 3: Cross multiply
    578.04x = 866.60 × 456.84
  4. Step 4: Simplify right side
    578.04x = 395,896.97
  5. Step 5: Solve for x
    x = 395,896.97/578.04
  6. Step 6: Final answer
    x = 684.90

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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.