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Finding the Fourth Proportional to 434.74, 600.18 and 287.63

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Solution

The fourth proportional to 434.74, 600.18 and 287.63 is: 397.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.74 : 600.18 = 287.63 : x
  2. Step 2: Convert to fraction form
    434.74/600.18 = 287.63/x
  3. Step 3: Cross multiply
    434.74x = 600.18 × 287.63
  4. Step 4: Simplify right side
    434.74x = 172,631.27
  5. Step 5: Solve for x
    x = 172,631.27/434.74
  6. Step 6: Final answer
    x = 397.09

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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.