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Finding the Fourth Proportional to 491.29, 736.45 and 248.15

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Solution

The fourth proportional to 491.29, 736.45 and 248.15 is: 371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.29 : 736.45 = 248.15 : x
  2. Step 2: Convert to fraction form
    491.29/736.45 = 248.15/x
  3. Step 3: Cross multiply
    491.29x = 736.45 × 248.15
  4. Step 4: Simplify right side
    491.29x = 182,751.29
  5. Step 5: Solve for x
    x = 182,751.29/491.29
  6. Step 6: Final answer
    x = 371.98

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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.