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Finding the Fourth Proportional to 590.82, 885.42 and 316.80

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Solution

The fourth proportional to 590.82, 885.42 and 316.80 is: 474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.82 : 885.42 = 316.80 : x
  2. Step 2: Convert to fraction form
    590.82/885.42 = 316.80/x
  3. Step 3: Cross multiply
    590.82x = 885.42 × 316.80
  4. Step 4: Simplify right side
    590.82x = 280,501.06
  5. Step 5: Solve for x
    x = 280,501.06/590.82
  6. Step 6: Final answer
    x = 474.77

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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.