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Finding the Fourth Proportional to 862.49, 1,293.12 and 375.27

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Solution

The fourth proportional to 862.49, 1,293.12 and 375.27 is: 562.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.49 : 1,293.12 = 375.27 : x
  2. Step 2: Convert to fraction form
    862.49/1,293.12 = 375.27/x
  3. Step 3: Cross multiply
    862.49x = 1,293.12 × 375.27
  4. Step 4: Simplify right side
    862.49x = 485,269.14
  5. Step 5: Solve for x
    x = 485,269.14/862.49
  6. Step 6: Final answer
    x = 562.64

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Double scale
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1.5x scale

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.