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Finding the Fourth Proportional to 957.81, 1,436.50 and 341.55

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Solution

The fourth proportional to 957.81, 1,436.50 and 341.55 is: 512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.81 : 1,436.50 = 341.55 : x
  2. Step 2: Convert to fraction form
    957.81/1,436.50 = 341.55/x
  3. Step 3: Cross multiply
    957.81x = 1,436.50 × 341.55
  4. Step 4: Simplify right side
    957.81x = 490,636.58
  5. Step 5: Solve for x
    x = 490,636.58/957.81
  6. Step 6: Final answer
    x = 512.25

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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.