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Finding the Fourth Proportional to 839.42, 1,158.33 and 466.37

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Solution

The fourth proportional to 839.42, 1,158.33 and 466.37 is: 643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    839.42 : 1,158.33 = 466.37 : x
  2. Step 2: Convert to fraction form
    839.42/1,158.33 = 466.37/x
  3. Step 3: Cross multiply
    839.42x = 1,158.33 × 466.37
  4. Step 4: Simplify right side
    839.42x = 540,204.57
  5. Step 5: Solve for x
    x = 540,204.57/839.42
  6. Step 6: Final answer
    x = 643.55

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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.