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Finding the Fourth Proportional to 847.61, 1,169.58 and 474.61

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Solution

The fourth proportional to 847.61, 1,169.58 and 474.61 is: 654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.61 : 1,169.58 = 474.61 : x
  2. Step 2: Convert to fraction form
    847.61/1,169.58 = 474.61/x
  3. Step 3: Cross multiply
    847.61x = 1,169.58 × 474.61
  4. Step 4: Simplify right side
    847.61x = 555,092.33
  5. Step 5: Solve for x
    x = 555,092.33/847.61
  6. Step 6: Final answer
    x = 654.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.