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Finding the Fourth Proportional to 1,483.58, 2,224.16 and 742.70

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Solution

The fourth proportional to 1,483.58, 2,224.16 and 742.70 is: 1,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,483.58 : 2,224.16 = 742.70 : x
  2. Step 2: Convert to fraction form
    1,483.58/2,224.16 = 742.70/x
  3. Step 3: Cross multiply
    1,483.58x = 2,224.16 × 742.70
  4. Step 4: Simplify right side
    1,483.58x = 1,651,883.63
  5. Step 5: Solve for x
    x = 1,651,883.63/1,483.58
  6. Step 6: Final answer
    x = 1,113.44

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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.