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Finding the Fourth Proportional to 1,036.35, 1,429.65 and 682.88

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Solution

The fourth proportional to 1,036.35, 1,429.65 and 682.88 is: 942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.35 : 1,429.65 = 682.88 : x
  2. Step 2: Convert to fraction form
    1,036.35/1,429.65 = 682.88/x
  3. Step 3: Cross multiply
    1,036.35x = 1,429.65 × 682.88
  4. Step 4: Simplify right side
    1,036.35x = 976,272.24
  5. Step 5: Solve for x
    x = 976,272.24/1,036.35
  6. Step 6: Final answer
    x = 942.03

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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.