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Finding the Fourth Proportional to 1,348.84, 2,023.32 and 618.76

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Solution

The fourth proportional to 1,348.84, 2,023.32 and 618.76 is: 928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.84 : 2,023.32 = 618.76 : x
  2. Step 2: Convert to fraction form
    1,348.84/2,023.32 = 618.76/x
  3. Step 3: Cross multiply
    1,348.84x = 2,023.32 × 618.76
  4. Step 4: Simplify right side
    1,348.84x = 1,251,949.48
  5. Step 5: Solve for x
    x = 1,251,949.48/1,348.84
  6. Step 6: Final answer
    x = 928.17

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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.