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Finding the Fourth Proportional to 1,000.10, 1,499.01 and 512.58

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Solution

The fourth proportional to 1,000.10, 1,499.01 and 512.58 is: 768.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000.10 : 1,499.01 = 512.58 : x
  2. Step 2: Convert to fraction form
    1,000.10/1,499.01 = 512.58/x
  3. Step 3: Cross multiply
    1,000.10x = 1,499.01 × 512.58
  4. Step 4: Simplify right side
    1,000.10x = 768,357.81
  5. Step 5: Solve for x
    x = 768,357.81/1,000.10
  6. Step 6: Final answer
    x = 768.28

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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.