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Finding the Fourth Proportional to 524.92, 723.54 and 393.88

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Solution

The fourth proportional to 524.92, 723.54 and 393.88 is: 542.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.92 : 723.54 = 393.88 : x
  2. Step 2: Convert to fraction form
    524.92/723.54 = 393.88/x
  3. Step 3: Cross multiply
    524.92x = 723.54 × 393.88
  4. Step 4: Simplify right side
    524.92x = 284,987.94
  5. Step 5: Solve for x
    x = 284,987.94/524.92
  6. Step 6: Final answer
    x = 542.92

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.