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Finding the Fourth Proportional to 93.01, 139.55 and 91.47

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Solution

The fourth proportional to 93.01, 139.55 and 91.47 is: 137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.01 : 139.55 = 91.47 : x
  2. Step 2: Convert to fraction form
    93.01/139.55 = 91.47/x
  3. Step 3: Cross multiply
    93.01x = 139.55 × 91.47
  4. Step 4: Simplify right side
    93.01x = 12,765.00
  5. Step 5: Solve for x
    x = 12,765.00/93.01
  6. Step 6: Final answer
    x = 137.25

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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.