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Finding the Fourth Proportional to 503.36, 751.45 and 448.68

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Solution

The fourth proportional to 503.36, 751.45 and 448.68 is: 669.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.36 : 751.45 = 448.68 : x
  2. Step 2: Convert to fraction form
    503.36/751.45 = 448.68/x
  3. Step 3: Cross multiply
    503.36x = 751.45 × 448.68
  4. Step 4: Simplify right side
    503.36x = 337,160.59
  5. Step 5: Solve for x
    x = 337,160.59/503.36
  6. Step 6: Final answer
    x = 669.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.