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Finding the Fourth Proportional to 1,485.59, 2,228.43 and 498.47

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Solution

The fourth proportional to 1,485.59, 2,228.43 and 498.47 is: 747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.59 : 2,228.43 = 498.47 : x
  2. Step 2: Convert to fraction form
    1,485.59/2,228.43 = 498.47/x
  3. Step 3: Cross multiply
    1,485.59x = 2,228.43 × 498.47
  4. Step 4: Simplify right side
    1,485.59x = 1,110,794.36
  5. Step 5: Solve for x
    x = 1,110,794.36/1,485.59
  6. Step 6: Final answer
    x = 747.72

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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.