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Finding the Fourth Proportional to 936.32, 1,291.70 and 582.14

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Solution

The fourth proportional to 936.32, 1,291.70 and 582.14 is: 803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.32 : 1,291.70 = 582.14 : x
  2. Step 2: Convert to fraction form
    936.32/1,291.70 = 582.14/x
  3. Step 3: Cross multiply
    936.32x = 1,291.70 × 582.14
  4. Step 4: Simplify right side
    936.32x = 751,950.24
  5. Step 5: Solve for x
    x = 751,950.24/936.32
  6. Step 6: Final answer
    x = 803.09

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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.