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Finding the Fourth Proportional to 1,618.20, 2,426.58 and 463.68

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Solution

The fourth proportional to 1,618.20, 2,426.58 and 463.68 is: 695.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.20 : 2,426.58 = 463.68 : x
  2. Step 2: Convert to fraction form
    1,618.20/2,426.58 = 463.68/x
  3. Step 3: Cross multiply
    1,618.20x = 2,426.58 × 463.68
  4. Step 4: Simplify right side
    1,618.20x = 1,125,156.61
  5. Step 5: Solve for x
    x = 1,125,156.61/1,618.20
  6. Step 6: Final answer
    x = 695.31

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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.