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Finding the Fourth Proportional to 971.84, 1,457.15 and 322.42

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Solution

The fourth proportional to 971.84, 1,457.15 and 322.42 is: 483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.84 : 1,457.15 = 322.42 : x
  2. Step 2: Convert to fraction form
    971.84/1,457.15 = 322.42/x
  3. Step 3: Cross multiply
    971.84x = 1,457.15 × 322.42
  4. Step 4: Simplify right side
    971.84x = 469,809.05
  5. Step 5: Solve for x
    x = 469,809.05/971.84
  6. Step 6: Final answer
    x = 483.42

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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.