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Finding the Fourth Proportional to 756.77, 1,043.57 and 632.37

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Solution

The fourth proportional to 756.77, 1,043.57 and 632.37 is: 872.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.77 : 1,043.57 = 632.37 : x
  2. Step 2: Convert to fraction form
    756.77/1,043.57 = 632.37/x
  3. Step 3: Cross multiply
    756.77x = 1,043.57 × 632.37
  4. Step 4: Simplify right side
    756.77x = 659,919.20
  5. Step 5: Solve for x
    x = 659,919.20/756.77
  6. Step 6: Final answer
    x = 872.03

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Find fourth proportional to 378.38, 521.78 and 316.19
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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.