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Finding the Fourth Proportional to 590.01, 814.65 and 393.99

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Solution

The fourth proportional to 590.01, 814.65 and 393.99 is: 544.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.01 : 814.65 = 393.99 : x
  2. Step 2: Convert to fraction form
    590.01/814.65 = 393.99/x
  3. Step 3: Cross multiply
    590.01x = 814.65 × 393.99
  4. Step 4: Simplify right side
    590.01x = 320,963.95
  5. Step 5: Solve for x
    x = 320,963.95/590.01
  6. Step 6: Final answer
    x = 544.00

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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.