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Finding the Fourth Proportional to 1,654.21, 2,480.81 and 558.28

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Solution

The fourth proportional to 1,654.21, 2,480.81 and 558.28 is: 837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,654.21 : 2,480.81 = 558.28 : x
  2. Step 2: Convert to fraction form
    1,654.21/2,480.81 = 558.28/x
  3. Step 3: Cross multiply
    1,654.21x = 2,480.81 × 558.28
  4. Step 4: Simplify right side
    1,654.21x = 1,384,977.61
  5. Step 5: Solve for x
    x = 1,384,977.61/1,654.21
  6. Step 6: Final answer
    x = 837.25

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1.5x scale

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.