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Finding the Fourth Proportional to 1,353.63, 2,031.26 and 488.01

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Solution

The fourth proportional to 1,353.63, 2,031.26 and 488.01 is: 732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.63 : 2,031.26 = 488.01 : x
  2. Step 2: Convert to fraction form
    1,353.63/2,031.26 = 488.01/x
  3. Step 3: Cross multiply
    1,353.63x = 2,031.26 × 488.01
  4. Step 4: Simplify right side
    1,353.63x = 991,275.19
  5. Step 5: Solve for x
    x = 991,275.19/1,353.63
  6. Step 6: Final answer
    x = 732.31

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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.