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Finding the Fourth Proportional to 616.34, 923.66 and 356.18

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Solution

The fourth proportional to 616.34, 923.66 and 356.18 is: 533.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.34 : 923.66 = 356.18 : x
  2. Step 2: Convert to fraction form
    616.34/923.66 = 356.18/x
  3. Step 3: Cross multiply
    616.34x = 923.66 × 356.18
  4. Step 4: Simplify right side
    616.34x = 328,989.22
  5. Step 5: Solve for x
    x = 328,989.22/616.34
  6. Step 6: Final answer
    x = 533.78

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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.