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Finding the Fourth Proportional to 1,140.67, 1,574.13 and 846.37

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Solution

The fourth proportional to 1,140.67, 1,574.13 and 846.37 is: 1,167.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.67 : 1,574.13 = 846.37 : x
  2. Step 2: Convert to fraction form
    1,140.67/1,574.13 = 846.37/x
  3. Step 3: Cross multiply
    1,140.67x = 1,574.13 × 846.37
  4. Step 4: Simplify right side
    1,140.67x = 1,332,296.41
  5. Step 5: Solve for x
    x = 1,332,296.41/1,140.67
  6. Step 6: Final answer
    x = 1,167.99

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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.