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Finding the Fourth Proportional to 746.66, 1,119.98 and 356.65

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Solution

The fourth proportional to 746.66, 1,119.98 and 356.65 is: 534.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.66 : 1,119.98 = 356.65 : x
  2. Step 2: Convert to fraction form
    746.66/1,119.98 = 356.65/x
  3. Step 3: Cross multiply
    746.66x = 1,119.98 × 356.65
  4. Step 4: Simplify right side
    746.66x = 399,438.96
  5. Step 5: Solve for x
    x = 399,438.96/746.66
  6. Step 6: Final answer
    x = 534.97

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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.