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Finding the Fourth Proportional to 445.23, 614.61 and 297.81

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Solution

The fourth proportional to 445.23, 614.61 and 297.81 is: 411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.23 : 614.61 = 297.81 : x
  2. Step 2: Convert to fraction form
    445.23/614.61 = 297.81/x
  3. Step 3: Cross multiply
    445.23x = 614.61 × 297.81
  4. Step 4: Simplify right side
    445.23x = 183,037.00
  5. Step 5: Solve for x
    x = 183,037.00/445.23
  6. Step 6: Final answer
    x = 411.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.