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Finding the Fourth Proportional to 501.74, 692.68 and 344.46

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Solution

The fourth proportional to 501.74, 692.68 and 344.46 is: 475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.74 : 692.68 = 344.46 : x
  2. Step 2: Convert to fraction form
    501.74/692.68 = 344.46/x
  3. Step 3: Cross multiply
    501.74x = 692.68 × 344.46
  4. Step 4: Simplify right side
    501.74x = 238,603.15
  5. Step 5: Solve for x
    x = 238,603.15/501.74
  6. Step 6: Final answer
    x = 475.55

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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.