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Finding the Fourth Proportional to 452.42, 678.70 and 144.29

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Solution

The fourth proportional to 452.42, 678.70 and 144.29 is: 216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.42 : 678.70 = 144.29 : x
  2. Step 2: Convert to fraction form
    452.42/678.70 = 144.29/x
  3. Step 3: Cross multiply
    452.42x = 678.70 × 144.29
  4. Step 4: Simplify right side
    452.42x = 97,926.41
  5. Step 5: Solve for x
    x = 97,926.41/452.42
  6. Step 6: Final answer
    x = 216.45

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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.