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Finding the Fourth Proportional to 623.88, 927.84 and 611.56

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Solution

The fourth proportional to 623.88, 927.84 and 611.56 is: 909.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.88 : 927.84 = 611.56 : x
  2. Step 2: Convert to fraction form
    623.88/927.84 = 611.56/x
  3. Step 3: Cross multiply
    623.88x = 927.84 × 611.56
  4. Step 4: Simplify right side
    623.88x = 567,429.83
  5. Step 5: Solve for x
    x = 567,429.83/623.88
  6. Step 6: Final answer
    x = 909.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.