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Finding the Fourth Proportional to 854.58, 1,281.14 and 334.46

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Solution

The fourth proportional to 854.58, 1,281.14 and 334.46 is: 501.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.58 : 1,281.14 = 334.46 : x
  2. Step 2: Convert to fraction form
    854.58/1,281.14 = 334.46/x
  3. Step 3: Cross multiply
    854.58x = 1,281.14 × 334.46
  4. Step 4: Simplify right side
    854.58x = 428,482.01
  5. Step 5: Solve for x
    x = 428,482.01/854.58
  6. Step 6: Final answer
    x = 501.39

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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.