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Finding the Fourth Proportional to 501.84, 692.62 and 397.28

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Solution

The fourth proportional to 501.84, 692.62 and 397.28 is: 548.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.84 : 692.62 = 397.28 : x
  2. Step 2: Convert to fraction form
    501.84/692.62 = 397.28/x
  3. Step 3: Cross multiply
    501.84x = 692.62 × 397.28
  4. Step 4: Simplify right side
    501.84x = 275,164.07
  5. Step 5: Solve for x
    x = 275,164.07/501.84
  6. Step 6: Final answer
    x = 548.31

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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.