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Finding the Fourth Proportional to 356.20, 531.54 and 353.14

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Solution

The fourth proportional to 356.20, 531.54 and 353.14 is: 526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.20 : 531.54 = 353.14 : x
  2. Step 2: Convert to fraction form
    356.20/531.54 = 353.14/x
  3. Step 3: Cross multiply
    356.20x = 531.54 × 353.14
  4. Step 4: Simplify right side
    356.20x = 187,708.04
  5. Step 5: Solve for x
    x = 187,708.04/356.20
  6. Step 6: Final answer
    x = 526.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.