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Finding the Fourth Proportional to 30, 41.14 and 29.58

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Solution

The fourth proportional to 30, 41.14 and 29.58 is: 40.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30 : 41.14 = 29.58 : x
  2. Step 2: Convert to fraction form
    30/41.14 = 29.58/x
  3. Step 3: Cross multiply
    30x = 41.14 × 29.58
  4. Step 4: Simplify right side
    30x = 1,216.92
  5. Step 5: Solve for x
    x = 1,216.92/30
  6. Step 6: Final answer
    x = 40.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.