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Finding the Fourth Proportional to 501.91, 692.73 and 302.90

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Solution

The fourth proportional to 501.91, 692.73 and 302.90 is: 418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.91 : 692.73 = 302.90 : x
  2. Step 2: Convert to fraction form
    501.91/692.73 = 302.90/x
  3. Step 3: Cross multiply
    501.91x = 692.73 × 302.90
  4. Step 4: Simplify right side
    501.91x = 209,824.45
  5. Step 5: Solve for x
    x = 209,824.45/501.91
  6. Step 6: Final answer
    x = 418.05

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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.