Home / 1,011.50-1,517.23-491.41

Finding the Fourth Proportional to 1,011.50, 1,517.23 and 491.41

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Solution

The fourth proportional to 1,011.50, 1,517.23 and 491.41 is: 737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011.50 : 1,517.23 = 491.41 : x
  2. Step 2: Convert to fraction form
    1,011.50/1,517.23 = 491.41/x
  3. Step 3: Cross multiply
    1,011.50x = 1,517.23 × 491.41
  4. Step 4: Simplify right side
    1,011.50x = 745,584.51
  5. Step 5: Solve for x
    x = 745,584.51/1,011.50
  6. Step 6: Final answer
    x = 737.11

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Double scale
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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.