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Finding the Fourth Proportional to 1,060.18, 1,590.43 and 329.82

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Solution

The fourth proportional to 1,060.18, 1,590.43 and 329.82 is: 494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.18 : 1,590.43 = 329.82 : x
  2. Step 2: Convert to fraction form
    1,060.18/1,590.43 = 329.82/x
  3. Step 3: Cross multiply
    1,060.18x = 1,590.43 × 329.82
  4. Step 4: Simplify right side
    1,060.18x = 524,555.62
  5. Step 5: Solve for x
    x = 524,555.62/1,060.18
  6. Step 6: Final answer
    x = 494.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.