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Finding the Fourth Proportional to 503.39, 756.24 and 434.21

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Solution

The fourth proportional to 503.39, 756.24 and 434.21 is: 652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.39 : 756.24 = 434.21 : x
  2. Step 2: Convert to fraction form
    503.39/756.24 = 434.21/x
  3. Step 3: Cross multiply
    503.39x = 756.24 × 434.21
  4. Step 4: Simplify right side
    503.39x = 328,365.81
  5. Step 5: Solve for x
    x = 328,365.81/503.39
  6. Step 6: Final answer
    x = 652.31

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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.