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Finding the Fourth Proportional to 1,053.60, 1,579.44 and 476.16

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Solution

The fourth proportional to 1,053.60, 1,579.44 and 476.16 is: 713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.60 : 1,579.44 = 476.16 : x
  2. Step 2: Convert to fraction form
    1,053.60/1,579.44 = 476.16/x
  3. Step 3: Cross multiply
    1,053.60x = 1,579.44 × 476.16
  4. Step 4: Simplify right side
    1,053.60x = 752,066.15
  5. Step 5: Solve for x
    x = 752,066.15/1,053.60
  6. Step 6: Final answer
    x = 713.81

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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.