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Finding the Fourth Proportional to 2,173.75, 3,260.64 and 530.31

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Solution

The fourth proportional to 2,173.75, 3,260.64 and 530.31 is: 795.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.75 : 3,260.64 = 530.31 : x
  2. Step 2: Convert to fraction form
    2,173.75/3,260.64 = 530.31/x
  3. Step 3: Cross multiply
    2,173.75x = 3,260.64 × 530.31
  4. Step 4: Simplify right side
    2,173.75x = 1,729,150.00
  5. Step 5: Solve for x
    x = 1,729,150.00/2,173.75
  6. Step 6: Final answer
    x = 795.47

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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.