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Finding the Fourth Proportional to 211.00, 316.54 and 124.29

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Solution

The fourth proportional to 211.00, 316.54 and 124.29 is: 186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.00 : 316.54 = 124.29 : x
  2. Step 2: Convert to fraction form
    211.00/316.54 = 124.29/x
  3. Step 3: Cross multiply
    211.00x = 316.54 × 124.29
  4. Step 4: Simplify right side
    211.00x = 39,343.26
  5. Step 5: Solve for x
    x = 39,343.26/211.00
  6. Step 6: Final answer
    x = 186.46

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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.