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Finding the Fourth Proportional to 741.87, 1,024.66 and 492.76

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Solution

The fourth proportional to 741.87, 1,024.66 and 492.76 is: 680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.87 : 1,024.66 = 492.76 : x
  2. Step 2: Convert to fraction form
    741.87/1,024.66 = 492.76/x
  3. Step 3: Cross multiply
    741.87x = 1,024.66 × 492.76
  4. Step 4: Simplify right side
    741.87x = 504,911.17
  5. Step 5: Solve for x
    x = 504,911.17/741.87
  6. Step 6: Final answer
    x = 680.59

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.