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Finding the Fourth Proportional to 590.74, 815.11 and 342.04

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Solution

The fourth proportional to 590.74, 815.11 and 342.04 is: 471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.74 : 815.11 = 342.04 : x
  2. Step 2: Convert to fraction form
    590.74/815.11 = 342.04/x
  3. Step 3: Cross multiply
    590.74x = 815.11 × 342.04
  4. Step 4: Simplify right side
    590.74x = 278,797.33
  5. Step 5: Solve for x
    x = 278,797.33/590.74
  6. Step 6: Final answer
    x = 471.95

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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.