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Finding the Fourth Proportional to 1,348.64, 2,024.40 and 579.68

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Solution

The fourth proportional to 1,348.64, 2,024.40 and 579.68 is: 870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.64 : 2,024.40 = 579.68 : x
  2. Step 2: Convert to fraction form
    1,348.64/2,024.40 = 579.68/x
  3. Step 3: Cross multiply
    1,348.64x = 2,024.40 × 579.68
  4. Step 4: Simplify right side
    1,348.64x = 1,173,504.19
  5. Step 5: Solve for x
    x = 1,173,504.19/1,348.64
  6. Step 6: Final answer
    x = 870.14

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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.