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Finding the Fourth Proportional to 865.36, 1,194.15 and 472.37

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Solution

The fourth proportional to 865.36, 1,194.15 and 472.37 is: 651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.36 : 1,194.15 = 472.37 : x
  2. Step 2: Convert to fraction form
    865.36/1,194.15 = 472.37/x
  3. Step 3: Cross multiply
    865.36x = 1,194.15 × 472.37
  4. Step 4: Simplify right side
    865.36x = 564,080.64
  5. Step 5: Solve for x
    x = 564,080.64/865.36
  6. Step 6: Final answer
    x = 651.85

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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.