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Finding the Fourth Proportional to 1,060.16, 1,590.03 and 443.61

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Solution

The fourth proportional to 1,060.16, 1,590.03 and 443.61 is: 665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.16 : 1,590.03 = 443.61 : x
  2. Step 2: Convert to fraction form
    1,060.16/1,590.03 = 443.61/x
  3. Step 3: Cross multiply
    1,060.16x = 1,590.03 × 443.61
  4. Step 4: Simplify right side
    1,060.16x = 705,353.21
  5. Step 5: Solve for x
    x = 705,353.21/1,060.16
  6. Step 6: Final answer
    x = 665.33

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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.