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Finding the Fourth Proportional to 1,648.76, 2,472.60 and 1,064.40

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Solution

The fourth proportional to 1,648.76, 2,472.60 and 1,064.40 is: 1,596.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.76 : 2,472.60 = 1,064.40 : x
  2. Step 2: Convert to fraction form
    1,648.76/2,472.60 = 1,064.40/x
  3. Step 3: Cross multiply
    1,648.76x = 2,472.60 × 1,064.40
  4. Step 4: Simplify right side
    1,648.76x = 2,631,835.44
  5. Step 5: Solve for x
    x = 2,631,835.44/1,648.76
  6. Step 6: Final answer
    x = 1,596.25

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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.