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Finding the Fourth Proportional to 504.20, 751.34 and 487.68

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Solution

The fourth proportional to 504.20, 751.34 and 487.68 is: 726.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.20 : 751.34 = 487.68 : x
  2. Step 2: Convert to fraction form
    504.20/751.34 = 487.68/x
  3. Step 3: Cross multiply
    504.20x = 751.34 × 487.68
  4. Step 4: Simplify right side
    504.20x = 366,413.49
  5. Step 5: Solve for x
    x = 366,413.49/504.20
  6. Step 6: Final answer
    x = 726.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.