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Finding the Fourth Proportional to 876.82, 1,210.01 and 483.85

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Solution

The fourth proportional to 876.82, 1,210.01 and 483.85 is: 667.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.82 : 1,210.01 = 483.85 : x
  2. Step 2: Convert to fraction form
    876.82/1,210.01 = 483.85/x
  3. Step 3: Cross multiply
    876.82x = 1,210.01 × 483.85
  4. Step 4: Simplify right side
    876.82x = 585,463.34
  5. Step 5: Solve for x
    x = 585,463.34/876.82
  6. Step 6: Final answer
    x = 667.71

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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.