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Finding the Fourth Proportional to 402.30, 602.82 and 356.58

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Solution

The fourth proportional to 402.30, 602.82 and 356.58 is: 534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.30 : 602.82 = 356.58 : x
  2. Step 2: Convert to fraction form
    402.30/602.82 = 356.58/x
  3. Step 3: Cross multiply
    402.30x = 602.82 × 356.58
  4. Step 4: Simplify right side
    402.30x = 214,953.56
  5. Step 5: Solve for x
    x = 214,953.56/402.30
  6. Step 6: Final answer
    x = 534.31

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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.