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Finding the Fourth Proportional to 976.99, 1,348.24 and 603.88

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Solution

The fourth proportional to 976.99, 1,348.24 and 603.88 is: 833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.99 : 1,348.24 = 603.88 : x
  2. Step 2: Convert to fraction form
    976.99/1,348.24 = 603.88/x
  3. Step 3: Cross multiply
    976.99x = 1,348.24 × 603.88
  4. Step 4: Simplify right side
    976.99x = 814,170.29
  5. Step 5: Solve for x
    x = 814,170.29/976.99
  6. Step 6: Final answer
    x = 833.35

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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.