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Finding the Fourth Proportional to 743.29, 1,114.55 and 249.52

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Solution

The fourth proportional to 743.29, 1,114.55 and 249.52 is: 374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.29 : 1,114.55 = 249.52 : x
  2. Step 2: Convert to fraction form
    743.29/1,114.55 = 249.52/x
  3. Step 3: Cross multiply
    743.29x = 1,114.55 × 249.52
  4. Step 4: Simplify right side
    743.29x = 278,102.52
  5. Step 5: Solve for x
    x = 278,102.52/743.29
  6. Step 6: Final answer
    x = 374.15

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.