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Finding the Fourth Proportional to 839.46, 1,158.37 and 466.38

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Solution

The fourth proportional to 839.46, 1,158.37 and 466.38 is: 643.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.46 : 1,158.37 = 466.38 : x
  2. Step 2: Convert to fraction form
    839.46/1,158.37 = 466.38/x
  3. Step 3: Cross multiply
    839.46x = 1,158.37 × 466.38
  4. Step 4: Simplify right side
    839.46x = 540,240.60
  5. Step 5: Solve for x
    x = 540,240.60/839.46
  6. Step 6: Final answer
    x = 643.56

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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.