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Finding the Fourth Proportional to 1,002.69, 1,503.01 and 508.19

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Solution

The fourth proportional to 1,002.69, 1,503.01 and 508.19 is: 761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.69 : 1,503.01 = 508.19 : x
  2. Step 2: Convert to fraction form
    1,002.69/1,503.01 = 508.19/x
  3. Step 3: Cross multiply
    1,002.69x = 1,503.01 × 508.19
  4. Step 4: Simplify right side
    1,002.69x = 763,805.87
  5. Step 5: Solve for x
    x = 763,805.87/1,002.69
  6. Step 6: Final answer
    x = 761.76

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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.