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Finding the Fourth Proportional to 9.30, 13.95 and 4.23

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Solution

The fourth proportional to 9.30, 13.95 and 4.23 is: 6.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.30 : 13.95 = 4.23 : x
  2. Step 2: Convert to fraction form
    9.30/13.95 = 4.23/x
  3. Step 3: Cross multiply
    9.30x = 13.95 × 4.23
  4. Step 4: Simplify right side
    9.30x = 59.01
  5. Step 5: Solve for x
    x = 59.01/9.30
  6. Step 6: Final answer
    x = 6.35

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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.