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Finding the Fourth Proportional to 876.03, 1,209.10 and 503.27

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Solution

The fourth proportional to 876.03, 1,209.10 and 503.27 is: 694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.03 : 1,209.10 = 503.27 : x
  2. Step 2: Convert to fraction form
    876.03/1,209.10 = 503.27/x
  3. Step 3: Cross multiply
    876.03x = 1,209.10 × 503.27
  4. Step 4: Simplify right side
    876.03x = 608,502.87
  5. Step 5: Solve for x
    x = 608,502.87/876.03
  6. Step 6: Final answer
    x = 694.61

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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.