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Finding the Fourth Proportional to 839, 1,157.86 and 466.02

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Solution

The fourth proportional to 839, 1,157.86 and 466.02 is: 643.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    839 : 1,157.86 = 466.02 : x
  2. Step 2: Convert to fraction form
    839/1,157.86 = 466.02/x
  3. Step 3: Cross multiply
    839x = 1,157.86 × 466.02
  4. Step 4: Simplify right side
    839x = 539,585.92
  5. Step 5: Solve for x
    x = 539,585.92/839
  6. Step 6: Final answer
    x = 643.13

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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.