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Finding the Fourth Proportional to 524.19, 722.86 and 445.42

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Solution

The fourth proportional to 524.19, 722.86 and 445.42 is: 614.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.19 : 722.86 = 445.42 : x
  2. Step 2: Convert to fraction form
    524.19/722.86 = 445.42/x
  3. Step 3: Cross multiply
    524.19x = 722.86 × 445.42
  4. Step 4: Simplify right side
    524.19x = 321,976.30
  5. Step 5: Solve for x
    x = 321,976.30/524.19
  6. Step 6: Final answer
    x = 614.24

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.