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Finding the Fourth Proportional to 164.70, 247.08 and 56.49

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Solution

The fourth proportional to 164.70, 247.08 and 56.49 is: 84.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.70 : 247.08 = 56.49 : x
  2. Step 2: Convert to fraction form
    164.70/247.08 = 56.49/x
  3. Step 3: Cross multiply
    164.70x = 247.08 × 56.49
  4. Step 4: Simplify right side
    164.70x = 13,957.55
  5. Step 5: Solve for x
    x = 13,957.55/164.70
  6. Step 6: Final answer
    x = 84.75

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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.