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Finding the Fourth Proportional to 806.40, 1,112.82 and 544.76

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Solution

The fourth proportional to 806.40, 1,112.82 and 544.76 is: 751.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.40 : 1,112.82 = 544.76 : x
  2. Step 2: Convert to fraction form
    806.40/1,112.82 = 544.76/x
  3. Step 3: Cross multiply
    806.40x = 1,112.82 × 544.76
  4. Step 4: Simplify right side
    806.40x = 606,219.82
  5. Step 5: Solve for x
    x = 606,219.82/806.40
  6. Step 6: Final answer
    x = 751.76

Related Problems

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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.