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Finding the Fourth Proportional to 1,007.62, 1,511.58 and 459.96

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Solution

The fourth proportional to 1,007.62, 1,511.58 and 459.96 is: 690.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.62 : 1,511.58 = 459.96 : x
  2. Step 2: Convert to fraction form
    1,007.62/1,511.58 = 459.96/x
  3. Step 3: Cross multiply
    1,007.62x = 1,511.58 × 459.96
  4. Step 4: Simplify right side
    1,007.62x = 695,266.34
  5. Step 5: Solve for x
    x = 695,266.34/1,007.62
  6. Step 6: Final answer
    x = 690.01

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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.