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Finding the Fourth Proportional to 616.17, 923.06 and 485.48

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Solution

The fourth proportional to 616.17, 923.06 and 485.48 is: 727.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.17 : 923.06 = 485.48 : x
  2. Step 2: Convert to fraction form
    616.17/923.06 = 485.48/x
  3. Step 3: Cross multiply
    616.17x = 923.06 × 485.48
  4. Step 4: Simplify right side
    616.17x = 448,127.17
  5. Step 5: Solve for x
    x = 448,127.17/616.17
  6. Step 6: Final answer
    x = 727.28

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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.