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Finding the Fourth Proportional to 461.39, 692.53 and 339.29

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Solution

The fourth proportional to 461.39, 692.53 and 339.29 is: 509.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.39 : 692.53 = 339.29 : x
  2. Step 2: Convert to fraction form
    461.39/692.53 = 339.29/x
  3. Step 3: Cross multiply
    461.39x = 692.53 × 339.29
  4. Step 4: Simplify right side
    461.39x = 234,963.34
  5. Step 5: Solve for x
    x = 234,963.34/461.39
  6. Step 6: Final answer
    x = 509.25

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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.