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Finding the Fourth Proportional to 1,447.84, 2,172.10 and 473.94

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Solution

The fourth proportional to 1,447.84, 2,172.10 and 473.94 is: 711.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.84 : 2,172.10 = 473.94 : x
  2. Step 2: Convert to fraction form
    1,447.84/2,172.10 = 473.94/x
  3. Step 3: Cross multiply
    1,447.84x = 2,172.10 × 473.94
  4. Step 4: Simplify right side
    1,447.84x = 1,029,445.07
  5. Step 5: Solve for x
    x = 1,029,445.07/1,447.84
  6. Step 6: Final answer
    x = 711.02

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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.