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Finding the Fourth Proportional to 1,144.04, 1,716.05 and 278.35

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Solution

The fourth proportional to 1,144.04, 1,716.05 and 278.35 is: 417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.04 : 1,716.05 = 278.35 : x
  2. Step 2: Convert to fraction form
    1,144.04/1,716.05 = 278.35/x
  3. Step 3: Cross multiply
    1,144.04x = 1,716.05 × 278.35
  4. Step 4: Simplify right side
    1,144.04x = 477,652.55
  5. Step 5: Solve for x
    x = 477,652.55/1,144.04
  6. Step 6: Final answer
    x = 417.52

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Double scale
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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.