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Finding the Fourth Proportional to 419.04, 627.48 and 274.32

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Solution

The fourth proportional to 419.04, 627.48 and 274.32 is: 410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.04 : 627.48 = 274.32 : x
  2. Step 2: Convert to fraction form
    419.04/627.48 = 274.32/x
  3. Step 3: Cross multiply
    419.04x = 627.48 × 274.32
  4. Step 4: Simplify right side
    419.04x = 172,130.31
  5. Step 5: Solve for x
    x = 172,130.31/419.04
  6. Step 6: Final answer
    x = 410.77

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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.