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Finding the Fourth Proportional to 508.03, 761.62 and 442.87

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Solution

The fourth proportional to 508.03, 761.62 and 442.87 is: 663.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.03 : 761.62 = 442.87 : x
  2. Step 2: Convert to fraction form
    508.03/761.62 = 442.87/x
  3. Step 3: Cross multiply
    508.03x = 761.62 × 442.87
  4. Step 4: Simplify right side
    508.03x = 337,298.65
  5. Step 5: Solve for x
    x = 337,298.65/508.03
  6. Step 6: Final answer
    x = 663.93

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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.