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Finding the Fourth Proportional to 1,630.28, 2,445 and 534.68

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Solution

The fourth proportional to 1,630.28, 2,445 and 534.68 is: 801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.28 : 2,445 = 534.68 : x
  2. Step 2: Convert to fraction form
    1,630.28/2,445 = 534.68/x
  3. Step 3: Cross multiply
    1,630.28x = 2,445 × 534.68
  4. Step 4: Simplify right side
    1,630.28x = 1,307,292.60
  5. Step 5: Solve for x
    x = 1,307,292.60/1,630.28
  6. Step 6: Final answer
    x = 801.88

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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.