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Finding the Fourth Proportional to 359.31, 537.59 and 205.31

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Solution

The fourth proportional to 359.31, 537.59 and 205.31 is: 307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.31 : 537.59 = 205.31 : x
  2. Step 2: Convert to fraction form
    359.31/537.59 = 205.31/x
  3. Step 3: Cross multiply
    359.31x = 537.59 × 205.31
  4. Step 4: Simplify right side
    359.31x = 110,368.89
  5. Step 5: Solve for x
    x = 110,368.89/359.31
  6. Step 6: Final answer
    x = 307.17

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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.