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Finding the Fourth Proportional to 1,064, 1,596.54 and 487.02

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Solution

The fourth proportional to 1,064, 1,596.54 and 487.02 is: 730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064 : 1,596.54 = 487.02 : x
  2. Step 2: Convert to fraction form
    1,064/1,596.54 = 487.02/x
  3. Step 3: Cross multiply
    1,064x = 1,596.54 × 487.02
  4. Step 4: Simplify right side
    1,064x = 777,546.91
  5. Step 5: Solve for x
    x = 777,546.91/1,064
  6. Step 6: Final answer
    x = 730.78

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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.