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Finding the Fourth Proportional to 30.50, 42.04 and 23.58

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Solution

The fourth proportional to 30.50, 42.04 and 23.58 is: 32.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.50 : 42.04 = 23.58 : x
  2. Step 2: Convert to fraction form
    30.50/42.04 = 23.58/x
  3. Step 3: Cross multiply
    30.50x = 42.04 × 23.58
  4. Step 4: Simplify right side
    30.50x = 991.24
  5. Step 5: Solve for x
    x = 991.24/30.50
  6. Step 6: Final answer
    x = 32.50

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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.