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Finding the Fourth Proportional to 210.09, 315.11 and 56.02

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Solution

The fourth proportional to 210.09, 315.11 and 56.02 is: 84.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.09 : 315.11 = 56.02 : x
  2. Step 2: Convert to fraction form
    210.09/315.11 = 56.02/x
  3. Step 3: Cross multiply
    210.09x = 315.11 × 56.02
  4. Step 4: Simplify right side
    210.09x = 17,652.97
  5. Step 5: Solve for x
    x = 17,652.97/210.09
  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.