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Finding the Fourth Proportional to 579.34, 799.50 and 317.35

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Solution

The fourth proportional to 579.34, 799.50 and 317.35 is: 437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.34 : 799.50 = 317.35 : x
  2. Step 2: Convert to fraction form
    579.34/799.50 = 317.35/x
  3. Step 3: Cross multiply
    579.34x = 799.50 × 317.35
  4. Step 4: Simplify right side
    579.34x = 253,723.51
  5. Step 5: Solve for x
    x = 253,723.51/579.34
  6. Step 6: Final answer
    x = 437.95

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Why These Related Problems?

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