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Finding the Fourth Proportional to 70.74, 96.60 and 70.26

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Solution

The fourth proportional to 70.74, 96.60 and 70.26 is: 95.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.74 : 96.60 = 70.26 : x
  2. Step 2: Convert to fraction form
    70.74/96.60 = 70.26/x
  3. Step 3: Cross multiply
    70.74x = 96.60 × 70.26
  4. Step 4: Simplify right side
    70.74x = 6,787.12
  5. Step 5: Solve for x
    x = 6,787.12/70.74
  6. Step 6: Final answer
    x = 95.94

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Find fourth proportional to 35.37, 48.30 and 35.13
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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.