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Finding the Fourth Proportional to 979.17, 1,468.63 and 248.73

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Solution

The fourth proportional to 979.17, 1,468.63 and 248.73 is: 373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.17 : 1,468.63 = 248.73 : x
  2. Step 2: Convert to fraction form
    979.17/1,468.63 = 248.73/x
  3. Step 3: Cross multiply
    979.17x = 1,468.63 × 248.73
  4. Step 4: Simplify right side
    979.17x = 365,291.72
  5. Step 5: Solve for x
    x = 365,291.72/979.17
  6. Step 6: Final answer
    x = 373.06

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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.