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Finding the Fourth Proportional to 808.82, 1,116.12 and 477.23

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Solution

The fourth proportional to 808.82, 1,116.12 and 477.23 is: 658.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.82 : 1,116.12 = 477.23 : x
  2. Step 2: Convert to fraction form
    808.82/1,116.12 = 477.23/x
  3. Step 3: Cross multiply
    808.82x = 1,116.12 × 477.23
  4. Step 4: Simplify right side
    808.82x = 532,640.37
  5. Step 5: Solve for x
    x = 532,640.37/808.82
  6. Step 6: Final answer
    x = 658.54

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Half scale
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Double scale
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1.5x scale

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.