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Finding the Fourth Proportional to 448.37, 672.55 and 436.22

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Solution

The fourth proportional to 448.37, 672.55 and 436.22 is: 654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.37 : 672.55 = 436.22 : x
  2. Step 2: Convert to fraction form
    448.37/672.55 = 436.22/x
  3. Step 3: Cross multiply
    448.37x = 672.55 × 436.22
  4. Step 4: Simplify right side
    448.37x = 293,376.40
  5. Step 5: Solve for x
    x = 293,376.40/448.37
  6. Step 6: Final answer
    x = 654.32

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Double scale
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Similar ratio
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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.