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Finding the Fourth Proportional to 70.65, 97.53 and 54.30

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Solution

The fourth proportional to 70.65, 97.53 and 54.30 is: 74.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.65 : 97.53 = 54.30 : x
  2. Step 2: Convert to fraction form
    70.65/97.53 = 54.30/x
  3. Step 3: Cross multiply
    70.65x = 97.53 × 54.30
  4. Step 4: Simplify right side
    70.65x = 5,295.88
  5. Step 5: Solve for x
    x = 5,295.88/70.65
  6. Step 6: Final answer
    x = 74.96

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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.