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Finding the Fourth Proportional to 411.51, 616.04 and 248.70

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Solution

The fourth proportional to 411.51, 616.04 and 248.70 is: 372.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.51 : 616.04 = 248.70 : x
  2. Step 2: Convert to fraction form
    411.51/616.04 = 248.70/x
  3. Step 3: Cross multiply
    411.51x = 616.04 × 248.70
  4. Step 4: Simplify right side
    411.51x = 153,207.90
  5. Step 5: Solve for x
    x = 153,207.90/411.51
  6. Step 6: Final answer
    x = 372.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.