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Finding the Fourth Proportional to 1,666.84, 2,500.44 and 512.68

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Solution

The fourth proportional to 1,666.84, 2,500.44 and 512.68 is: 769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.84 : 2,500.44 = 512.68 : x
  2. Step 2: Convert to fraction form
    1,666.84/2,500.44 = 512.68/x
  3. Step 3: Cross multiply
    1,666.84x = 2,500.44 × 512.68
  4. Step 4: Simplify right side
    1,666.84x = 1,281,925.58
  5. Step 5: Solve for x
    x = 1,281,925.58/1,666.84
  6. Step 6: Final answer
    x = 769.08

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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.