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Finding the Fourth Proportional to 671.38, 926.10 and 450.35

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Solution

The fourth proportional to 671.38, 926.10 and 450.35 is: 621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.38 : 926.10 = 450.35 : x
  2. Step 2: Convert to fraction form
    671.38/926.10 = 450.35/x
  3. Step 3: Cross multiply
    671.38x = 926.10 × 450.35
  4. Step 4: Simplify right side
    671.38x = 417,069.14
  5. Step 5: Solve for x
    x = 417,069.14/671.38
  6. Step 6: Final answer
    x = 621.21

Related Problems

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Half scale
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Double scale
Find fourth proportional to 672.38, 927.48 and 451.35
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.