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Finding the Fourth Proportional to 411.19, 616.48 and 248.83

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Solution

The fourth proportional to 411.19, 616.48 and 248.83 is: 373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.19 : 616.48 = 248.83 : x
  2. Step 2: Convert to fraction form
    411.19/616.48 = 248.83/x
  3. Step 3: Cross multiply
    411.19x = 616.48 × 248.83
  4. Step 4: Simplify right side
    411.19x = 153,398.72
  5. Step 5: Solve for x
    x = 153,398.72/411.19
  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.