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Finding the Fourth Proportional to 590.20, 814.08 and 380.64

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Solution

The fourth proportional to 590.20, 814.08 and 380.64 is: 525.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.20 : 814.08 = 380.64 : x
  2. Step 2: Convert to fraction form
    590.20/814.08 = 380.64/x
  3. Step 3: Cross multiply
    590.20x = 814.08 × 380.64
  4. Step 4: Simplify right side
    590.20x = 309,871.41
  5. Step 5: Solve for x
    x = 309,871.41/590.20
  6. Step 6: Final answer
    x = 525.03

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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.