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Finding the Fourth Proportional to 74.00, 111.05 and 56.00

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Solution

The fourth proportional to 74.00, 111.05 and 56.00 is: 84.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.00 : 111.05 = 56.00 : x
  2. Step 2: Convert to fraction form
    74.00/111.05 = 56.00/x
  3. Step 3: Cross multiply
    74.00x = 111.05 × 56.00
  4. Step 4: Simplify right side
    74.00x = 6,217.96
  5. Step 5: Solve for x
    x = 6,217.96/74.00
  6. Step 6: Final answer
    x = 84.03

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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.