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Finding the Fourth Proportional to 538.01, 807.24 and 209.17

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Solution

The fourth proportional to 538.01, 807.24 and 209.17 is: 313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.01 : 807.24 = 209.17 : x
  2. Step 2: Convert to fraction form
    538.01/807.24 = 209.17/x
  3. Step 3: Cross multiply
    538.01x = 807.24 × 209.17
  4. Step 4: Simplify right side
    538.01x = 168,852.18
  5. Step 5: Solve for x
    x = 168,852.18/538.01
  6. Step 6: Final answer
    x = 313.85

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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.