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Finding the Fourth Proportional to 93.19, 128.66 and 60.50

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Solution

The fourth proportional to 93.19, 128.66 and 60.50 is: 83.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.19 : 128.66 = 60.50 : x
  2. Step 2: Convert to fraction form
    93.19/128.66 = 60.50/x
  3. Step 3: Cross multiply
    93.19x = 128.66 × 60.50
  4. Step 4: Simplify right side
    93.19x = 7,783.74
  5. Step 5: Solve for x
    x = 7,783.74/93.19
  6. Step 6: Final answer
    x = 83.53

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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.