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Finding the Fourth Proportional to 452.28, 678.58 and 144.13

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Solution

The fourth proportional to 452.28, 678.58 and 144.13 is: 216.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.28 : 678.58 = 144.13 : x
  2. Step 2: Convert to fraction form
    452.28/678.58 = 144.13/x
  3. Step 3: Cross multiply
    452.28x = 678.58 × 144.13
  4. Step 4: Simplify right side
    452.28x = 97,802.95
  5. Step 5: Solve for x
    x = 97,802.95/452.28
  6. Step 6: Final answer
    x = 216.24

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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.