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Finding the Fourth Proportional to 1,053.12, 1,576.44 and 984.72

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Solution

The fourth proportional to 1,053.12, 1,576.44 and 984.72 is: 1,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.12 : 1,576.44 = 984.72 : x
  2. Step 2: Convert to fraction form
    1,053.12/1,576.44 = 984.72/x
  3. Step 3: Cross multiply
    1,053.12x = 1,576.44 × 984.72
  4. Step 4: Simplify right side
    1,053.12x = 1,552,352.00
  5. Step 5: Solve for x
    x = 1,552,352.00/1,053.12
  6. Step 6: Final answer
    x = 1,474.05

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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.