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Finding the Fourth Proportional to 808.96, 1,116.45 and 477.38

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Solution

The fourth proportional to 808.96, 1,116.45 and 477.38 is: 658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.96 : 1,116.45 = 477.38 : x
  2. Step 2: Convert to fraction form
    808.96/1,116.45 = 477.38/x
  3. Step 3: Cross multiply
    808.96x = 1,116.45 × 477.38
  4. Step 4: Simplify right side
    808.96x = 532,965.32
  5. Step 5: Solve for x
    x = 532,965.32/808.96
  6. Step 6: Final answer
    x = 658.83

Related Problems

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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.