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Finding the Fourth Proportional to 553.86, 762.04 and 540.19

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Solution

The fourth proportional to 553.86, 762.04 and 540.19 is: 743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.86 : 762.04 = 540.19 : x
  2. Step 2: Convert to fraction form
    553.86/762.04 = 540.19/x
  3. Step 3: Cross multiply
    553.86x = 762.04 × 540.19
  4. Step 4: Simplify right side
    553.86x = 411,643.69
  5. Step 5: Solve for x
    x = 411,643.69/553.86
  6. Step 6: Final answer
    x = 743.23

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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.