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Finding the Fourth Proportional to 93.34, 140.51 and 66.48

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Solution

The fourth proportional to 93.34, 140.51 and 66.48 is: 100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.34 : 140.51 = 66.48 : x
  2. Step 2: Convert to fraction form
    93.34/140.51 = 66.48/x
  3. Step 3: Cross multiply
    93.34x = 140.51 × 66.48
  4. Step 4: Simplify right side
    93.34x = 9,341.10
  5. Step 5: Solve for x
    x = 9,341.10/93.34
  6. Step 6: Final answer
    x = 100.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.