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Finding the Fourth Proportional to 936.54, 1,404.01 and 571.58

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Solution

The fourth proportional to 936.54, 1,404.01 and 571.58 is: 856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.54 : 1,404.01 = 571.58 : x
  2. Step 2: Convert to fraction form
    936.54/1,404.01 = 571.58/x
  3. Step 3: Cross multiply
    936.54x = 1,404.01 × 571.58
  4. Step 4: Simplify right side
    936.54x = 802,505.34
  5. Step 5: Solve for x
    x = 802,505.34/936.54
  6. Step 6: Final answer
    x = 856.89

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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.