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Finding the Fourth Proportional to 1,460.70, 2,190.24 and 486.72

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Solution

The fourth proportional to 1,460.70, 2,190.24 and 486.72 is: 729.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.70 : 2,190.24 = 486.72 : x
  2. Step 2: Convert to fraction form
    1,460.70/2,190.24 = 486.72/x
  3. Step 3: Cross multiply
    1,460.70x = 2,190.24 × 486.72
  4. Step 4: Simplify right side
    1,460.70x = 1,066,033.61
  5. Step 5: Solve for x
    x = 1,066,033.61/1,460.70
  6. Step 6: Final answer
    x = 729.81

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1.5x scale

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.