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Finding the Fourth Proportional to 624.06, 935.76 and 311.66

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Solution

The fourth proportional to 624.06, 935.76 and 311.66 is: 467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.06 : 935.76 = 311.66 : x
  2. Step 2: Convert to fraction form
    624.06/935.76 = 311.66/x
  3. Step 3: Cross multiply
    624.06x = 935.76 × 311.66
  4. Step 4: Simplify right side
    624.06x = 291,638.96
  5. Step 5: Solve for x
    x = 291,638.96/624.06
  6. Step 6: Final answer
    x = 467.33

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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.