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Finding the Fourth Proportional to 561.51, 842.57 and 237.11

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Solution

The fourth proportional to 561.51, 842.57 and 237.11 is: 355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.51 : 842.57 = 237.11 : x
  2. Step 2: Convert to fraction form
    561.51/842.57 = 237.11/x
  3. Step 3: Cross multiply
    561.51x = 842.57 × 237.11
  4. Step 4: Simplify right side
    561.51x = 199,777.26
  5. Step 5: Solve for x
    x = 199,777.26/561.51
  6. Step 6: Final answer
    x = 355.79

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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.