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Finding the Fourth Proportional to 365.62, 503.55 and 316.48

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Solution

The fourth proportional to 365.62, 503.55 and 316.48 is: 435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.62 : 503.55 = 316.48 : x
  2. Step 2: Convert to fraction form
    365.62/503.55 = 316.48/x
  3. Step 3: Cross multiply
    365.62x = 503.55 × 316.48
  4. Step 4: Simplify right side
    365.62x = 159,363.50
  5. Step 5: Solve for x
    x = 159,363.50/365.62
  6. Step 6: Final answer
    x = 435.87

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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.