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Finding the Fourth Proportional to 847.55, 1,169.60 and 474.59

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Solution

The fourth proportional to 847.55, 1,169.60 and 474.59 is: 654.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.55 : 1,169.60 = 474.59 : x
  2. Step 2: Convert to fraction form
    847.55/1,169.60 = 474.59/x
  3. Step 3: Cross multiply
    847.55x = 1,169.60 × 474.59
  4. Step 4: Simplify right side
    847.55x = 555,081.02
  5. Step 5: Solve for x
    x = 555,081.02/847.55
  6. Step 6: Final answer
    x = 654.92

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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.