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Finding the Fourth Proportional to 93.07, 128.43 and 51.62

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Solution

The fourth proportional to 93.07, 128.43 and 51.62 is: 71.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.07 : 128.43 = 51.62 : x
  2. Step 2: Convert to fraction form
    93.07/128.43 = 51.62/x
  3. Step 3: Cross multiply
    93.07x = 128.43 × 51.62
  4. Step 4: Simplify right side
    93.07x = 6,629.56
  5. Step 5: Solve for x
    x = 6,629.56/93.07
  6. Step 6: Final answer
    x = 71.23

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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.