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Finding the Fourth Proportional to 806.08, 1,112.42 and 456.76

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Solution

The fourth proportional to 806.08, 1,112.42 and 456.76 is: 630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.08 : 1,112.42 = 456.76 : x
  2. Step 2: Convert to fraction form
    806.08/1,112.42 = 456.76/x
  3. Step 3: Cross multiply
    806.08x = 1,112.42 × 456.76
  4. Step 4: Simplify right side
    806.08x = 508,108.96
  5. Step 5: Solve for x
    x = 508,108.96/806.08
  6. Step 6: Final answer
    x = 630.35

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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.