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Finding the Fourth Proportional to 579.64, 868.98 and 476.68

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Solution

The fourth proportional to 579.64, 868.98 and 476.68 is: 714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.64 : 868.98 = 476.68 : x
  2. Step 2: Convert to fraction form
    579.64/868.98 = 476.68/x
  3. Step 3: Cross multiply
    579.64x = 868.98 × 476.68
  4. Step 4: Simplify right side
    579.64x = 414,225.39
  5. Step 5: Solve for x
    x = 414,225.39/579.64
  6. Step 6: Final answer
    x = 714.63

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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.