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Finding the Fourth Proportional to 1,398.29, 2,097.08 and 508.67

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Solution

The fourth proportional to 1,398.29, 2,097.08 and 508.67 is: 762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.29 : 2,097.08 = 508.67 : x
  2. Step 2: Convert to fraction form
    1,398.29/2,097.08 = 508.67/x
  3. Step 3: Cross multiply
    1,398.29x = 2,097.08 × 508.67
  4. Step 4: Simplify right side
    1,398.29x = 1,066,721.68
  5. Step 5: Solve for x
    x = 1,066,721.68/1,398.29
  6. Step 6: Final answer
    x = 762.88

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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.