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Finding the Fourth Proportional to 501.39, 692.82 and 484.38

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Solution

The fourth proportional to 501.39, 692.82 and 484.38 is: 669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 692.82 = 484.38 : x
  2. Step 2: Convert to fraction form
    501.39/692.82 = 484.38/x
  3. Step 3: Cross multiply
    501.39x = 692.82 × 484.38
  4. Step 4: Simplify right side
    501.39x = 335,588.15
  5. Step 5: Solve for x
    x = 335,588.15/501.39
  6. Step 6: Final answer
    x = 669.32

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Double scale
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1.5x scale

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.