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Finding the Fourth Proportional to 618.95, 927.32 and 374.91

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Solution

The fourth proportional to 618.95, 927.32 and 374.91 is: 561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.95 : 927.32 = 374.91 : x
  2. Step 2: Convert to fraction form
    618.95/927.32 = 374.91/x
  3. Step 3: Cross multiply
    618.95x = 927.32 × 374.91
  4. Step 4: Simplify right side
    618.95x = 347,659.67
  5. Step 5: Solve for x
    x = 347,659.67/618.95
  6. Step 6: Final answer
    x = 561.70

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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.