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Finding the Fourth Proportional to 561.71, 842.55 and 237.30

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Solution

The fourth proportional to 561.71, 842.55 and 237.30 is: 355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.71 : 842.55 = 237.30 : x
  2. Step 2: Convert to fraction form
    561.71/842.55 = 237.30/x
  3. Step 3: Cross multiply
    561.71x = 842.55 × 237.30
  4. Step 4: Simplify right side
    561.71x = 199,937.12
  5. Step 5: Solve for x
    x = 199,937.12/561.71
  6. Step 6: Final answer
    x = 355.95

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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.