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Finding the Fourth Proportional to 507.77, 700.54 and 321.19

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Solution

The fourth proportional to 507.77, 700.54 and 321.19 is: 443.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.77 : 700.54 = 321.19 : x
  2. Step 2: Convert to fraction form
    507.77/700.54 = 321.19/x
  3. Step 3: Cross multiply
    507.77x = 700.54 × 321.19
  4. Step 4: Simplify right side
    507.77x = 225,006.44
  5. Step 5: Solve for x
    x = 225,006.44/507.77
  6. Step 6: Final answer
    x = 443.13

Related Problems

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Double scale
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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.