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Finding the Fourth Proportional to 508.66, 762.30 and 277.61

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Solution

The fourth proportional to 508.66, 762.30 and 277.61 is: 416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.66 : 762.30 = 277.61 : x
  2. Step 2: Convert to fraction form
    508.66/762.30 = 277.61/x
  3. Step 3: Cross multiply
    508.66x = 762.30 × 277.61
  4. Step 4: Simplify right side
    508.66x = 211,618.29
  5. Step 5: Solve for x
    x = 211,618.29/508.66
  6. Step 6: Final answer
    x = 416.03

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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.