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Finding the Fourth Proportional to 501.39, 692.55 and 454.61

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Solution

The fourth proportional to 501.39, 692.55 and 454.61 is: 627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.39 : 692.55 = 454.61 : x
  2. Step 2: Convert to fraction form
    501.39/692.55 = 454.61/x
  3. Step 3: Cross multiply
    501.39x = 692.55 × 454.61
  4. Step 4: Simplify right side
    501.39x = 314,841.89
  5. Step 5: Solve for x
    x = 314,841.89/501.39
  6. Step 6: Final answer
    x = 627.94

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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.