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Finding the Fourth Proportional to 91.37, 126.04 and 70.35

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Solution

The fourth proportional to 91.37, 126.04 and 70.35 is: 97.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.37 : 126.04 = 70.35 : x
  2. Step 2: Convert to fraction form
    91.37/126.04 = 70.35/x
  3. Step 3: Cross multiply
    91.37x = 126.04 × 70.35
  4. Step 4: Simplify right side
    91.37x = 8,867.11
  5. Step 5: Solve for x
    x = 8,867.11/91.37
  6. Step 6: Final answer
    x = 97.05

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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.