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Finding the Fourth Proportional to 807.36, 1,115.14 and 585.96

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Solution

The fourth proportional to 807.36, 1,115.14 and 585.96 is: 809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.36 : 1,115.14 = 585.96 : x
  2. Step 2: Convert to fraction form
    807.36/1,115.14 = 585.96/x
  3. Step 3: Cross multiply
    807.36x = 1,115.14 × 585.96
  4. Step 4: Simplify right side
    807.36x = 653,427.43
  5. Step 5: Solve for x
    x = 653,427.43/807.36
  6. Step 6: Final answer
    x = 809.34

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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.