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Finding the Fourth Proportional to 580.10, 799.88 and 393.53

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Solution

The fourth proportional to 580.10, 799.88 and 393.53 is: 542.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.10 : 799.88 = 393.53 : x
  2. Step 2: Convert to fraction form
    580.10/799.88 = 393.53/x
  3. Step 3: Cross multiply
    580.10x = 799.88 × 393.53
  4. Step 4: Simplify right side
    580.10x = 314,770.81
  5. Step 5: Solve for x
    x = 314,770.81/580.10
  6. Step 6: Final answer
    x = 542.62

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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.