Home / 1,087.37-1,631.06-265.65

Finding the Fourth Proportional to 1,087.37, 1,631.06 and 265.65

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Solution

The fourth proportional to 1,087.37, 1,631.06 and 265.65 is: 398.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.37 : 1,631.06 = 265.65 : x
  2. Step 2: Convert to fraction form
    1,087.37/1,631.06 = 265.65/x
  3. Step 3: Cross multiply
    1,087.37x = 1,631.06 × 265.65
  4. Step 4: Simplify right side
    1,087.37x = 433,291.09
  5. Step 5: Solve for x
    x = 433,291.09/1,087.37
  6. Step 6: Final answer
    x = 398.48

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.