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Finding the Fourth Proportional to 808.76, 1,116.12 and 459.56

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Solution

The fourth proportional to 808.76, 1,116.12 and 459.56 is: 634.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.76 : 1,116.12 = 459.56 : x
  2. Step 2: Convert to fraction form
    808.76/1,116.12 = 459.56/x
  3. Step 3: Cross multiply
    808.76x = 1,116.12 × 459.56
  4. Step 4: Simplify right side
    808.76x = 512,924.11
  5. Step 5: Solve for x
    x = 512,924.11/808.76
  6. Step 6: Final answer
    x = 634.21

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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.