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Finding the Fourth Proportional to 590.54, 815.55 and 442.94

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Solution

The fourth proportional to 590.54, 815.55 and 442.94 is: 611.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.54 : 815.55 = 442.94 : x
  2. Step 2: Convert to fraction form
    590.54/815.55 = 442.94/x
  3. Step 3: Cross multiply
    590.54x = 815.55 × 442.94
  4. Step 4: Simplify right side
    590.54x = 361,239.72
  5. Step 5: Solve for x
    x = 361,239.72/590.54
  6. Step 6: Final answer
    x = 611.71

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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.