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Finding the Fourth Proportional to 590.59, 815.16 and 381.00

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Solution

The fourth proportional to 590.59, 815.16 and 381.00 is: 525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.59 : 815.16 = 381.00 : x
  2. Step 2: Convert to fraction form
    590.59/815.16 = 381.00/x
  3. Step 3: Cross multiply
    590.59x = 815.16 × 381.00
  4. Step 4: Simplify right side
    590.59x = 310,580.45
  5. Step 5: Solve for x
    x = 310,580.45/590.59
  6. Step 6: Final answer
    x = 525.88

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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.