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Finding the Fourth Proportional to 971.82, 1,457.82 and 322.62

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Solution

The fourth proportional to 971.82, 1,457.82 and 322.62 is: 483.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.82 : 1,457.82 = 322.62 : x
  2. Step 2: Convert to fraction form
    971.82/1,457.82 = 322.62/x
  3. Step 3: Cross multiply
    971.82x = 1,457.82 × 322.62
  4. Step 4: Simplify right side
    971.82x = 470,321.89
  5. Step 5: Solve for x
    x = 470,321.89/971.82
  6. Step 6: Final answer
    x = 483.96

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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.