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Finding the Fourth Proportional to 47.23, 64.33 and 47.08

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Solution

The fourth proportional to 47.23, 64.33 and 47.08 is: 64.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.23 : 64.33 = 47.08 : x
  2. Step 2: Convert to fraction form
    47.23/64.33 = 47.08/x
  3. Step 3: Cross multiply
    47.23x = 64.33 × 47.08
  4. Step 4: Simplify right side
    47.23x = 3,028.66
  5. Step 5: Solve for x
    x = 3,028.66/47.23
  6. Step 6: Final answer
    x = 64.13

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.