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Finding the Fourth Proportional to 70.60, 97.36 and 56.08

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Solution

The fourth proportional to 70.60, 97.36 and 56.08 is: 77.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.60 : 97.36 = 56.08 : x
  2. Step 2: Convert to fraction form
    70.60/97.36 = 56.08/x
  3. Step 3: Cross multiply
    70.60x = 97.36 × 56.08
  4. Step 4: Simplify right side
    70.60x = 5,459.95
  5. Step 5: Solve for x
    x = 5,459.95/70.60
  6. Step 6: Final answer
    x = 77.34

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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.