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Finding the Fourth Proportional to 431.83, 595.05 and 300.61

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Solution

The fourth proportional to 431.83, 595.05 and 300.61 is: 414.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.83 : 595.05 = 300.61 : x
  2. Step 2: Convert to fraction form
    431.83/595.05 = 300.61/x
  3. Step 3: Cross multiply
    431.83x = 595.05 × 300.61
  4. Step 4: Simplify right side
    431.83x = 178,877.60
  5. Step 5: Solve for x
    x = 178,877.60/431.83
  6. Step 6: Final answer
    x = 414.23

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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.