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Finding the Fourth Proportional to 551.86, 761.58 and 303.19

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Solution

The fourth proportional to 551.86, 761.58 and 303.19 is: 418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.86 : 761.58 = 303.19 : x
  2. Step 2: Convert to fraction form
    551.86/761.58 = 303.19/x
  3. Step 3: Cross multiply
    551.86x = 761.58 × 303.19
  4. Step 4: Simplify right side
    551.86x = 230,903.44
  5. Step 5: Solve for x
    x = 230,903.44/551.86
  6. Step 6: Final answer
    x = 418.41

Related Problems

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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.