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Finding the Fourth Proportional to 1,451.32, 2,176.98 and 585.43

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Solution

The fourth proportional to 1,451.32, 2,176.98 and 585.43 is: 878.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.32 : 2,176.98 = 585.43 : x
  2. Step 2: Convert to fraction form
    1,451.32/2,176.98 = 585.43/x
  3. Step 3: Cross multiply
    1,451.32x = 2,176.98 × 585.43
  4. Step 4: Simplify right side
    1,451.32x = 1,274,461.76
  5. Step 5: Solve for x
    x = 1,274,461.76/1,451.32
  6. Step 6: Final answer
    x = 878.14

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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.