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Finding the Fourth Proportional to 356.53, 534.80 and 113.05

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Solution

The fourth proportional to 356.53, 534.80 and 113.05 is: 169.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.53 : 534.80 = 113.05 : x
  2. Step 2: Convert to fraction form
    356.53/534.80 = 113.05/x
  3. Step 3: Cross multiply
    356.53x = 534.80 × 113.05
  4. Step 4: Simplify right side
    356.53x = 60,459.14
  5. Step 5: Solve for x
    x = 60,459.14/356.53
  6. Step 6: Final answer
    x = 169.58

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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.